Luca sleeping in Doctor Charlotte’s office. He awakens a few seconds later and is rushed out of the office by the doctor. He suffers from insomnia and has trouble sleeping at home, but finds himself comfortable between the four walls of the office. Before leaving, he asks Doctor Charlotte for some coffee, but Doctor Charlotte rejects his request. Caffeine isn’t good for him; she hands him a bottle of melatonin pills instead.

When Luca exits the office, he becomes suspicious of his surroundings and takes a look behind him. Though nothing catches his eye, someone is recording his every move from a corner not too far away. When Luca arrives home, he immediately washes his hand and cleans his teeth with mouthwash. His peace at home only lasts for so long though. Just a few seconds after settling down, Luca receives an unexpected visit from his teaching assistant, Julian.

While Luca is more concerned about the fact that Julian still hasn’t memorized the 8-digit code to his apartment, Julian is more occupied with something else: the road trip to his hometown which he wants Luca to accompany him on. Although Luca originally refuses to go, he eventually gives in to Julian’s request. Julian’s guilt tripping gets to Luca so he changes his mind. It’s only for two days, it shouldn’t be that bad right?

On the way to Julian’s hometown, the two make a stop for some coffee at a cafe in the Abiri Mountains. The cafe is called ‘Fairy Cafe’ and the barista is an old woman named Amelia. Our two boys are surprised and flustered at her appearance and the names of the drinks on the menu. Two villagers wait impatiently in line behind our two men who attempt to grasp the situation and which drink they want to purchase. They quickly order some coffee and also meet the cafe’s cat, Stella, afterwards.

When Grandma Amelia serves the pair their coffee, Luca quickly becomes dissatisfied. He complains about the fruit fly in his drink. Instead of re-making Luca’s drink, Grandma Amelia simply takes out the fruit fly with her fingers. This of course doesn’t fly with Luca and he demands for a new drink. Grandma Amelia listens to him the second time around and returns to make his drink again.

Luca and Julian leave after trying some of the coffee. However, things get confusing for the two and they get lost while driving further into the mountains. Eventually they are forced to get out of their cars and to wander around in the woods. They discover a stone tower near a trail so they follow the trail in hopes of finding Julian’s house. Though Luca is exhausted, the trail feels familiar to him. He feels like he’s been on the trail before.

After a few hours of running, Julian and Luca take a break. They first stop to notice the full moon up in the sky which Julian notes symbolize the presence of spirits and ghosts. Afterwards, the duo find themselves in an awkward situation: they witness Grandma Amelia going for a swim near the waterfall. The two guys quickly divert their eyes elsewhere, but Luca notices something different. The Amelia in the water has long almond hair, not the grey hair that Grandma Amelia sported in the cafe.

Julian’s foot accidentally slips on a rock and makes a noise which grabs Amelia’s attention. Julian and Luca panic when the young woman notices them watching her not too far away. The woman in the water is a much younger Amelia and she flies toward the two guys upon seeing them. She accidentally knocks them both out unconscious and only feels a little guilty afterwards when she realizes that they were customers at her cafe earlier that day. When the two men wake up, they find themselves back inside of their car. However, Julian’s neck is sprained and the two have switched seats. Additionally, the stone tower leading to the trail has now fallen.

Luca and Julian eventually make it to Julian’s house safely. That evening, they discuss with each other the situation earlier in the mountains. Julian reasons that Amelia could be a nine-tailed fox. She did transform from an old woman to a young lady. Luca assumes Julian is just hallucinating and imagining things.

The two guys then eat dinner with Mom. Mom’s glad to meet Luca and is even happier at the sight of the whiskey bottle that he brought for her. Just as she’s about to get up from the dinner table to place the bottle on a shelf, Luca volunteers to do the work for her. The two go back and forth until Luca accidentally pulls Mom’s pants down which causes both her and their entire table of food to tumble to the floor.

After eating, Luca and Julian head to a lantern festival afterwards. Mom takes pride in introducing her son to other villagers and his plans of becoming a professor. While Luca is more occupied with buying himself a corn dog, Julian notices Amelia walking around at the festival. They eventually reunite and Luca snaps at Amelia for the situation earlier at the waterfall.

While Luca makes snarky accusations against Amelia, Julian is more apologetic and calm. He apologizes for interrupting her swim earlier in the mountains. A man approaches the trio afterwards and stands up for Amelia. The man – Teacher park – threatens both Luca and Julian to leave Amelia alone. His anger worsens when the ketchup on Luca’s hotdog lands on his shirt.

The tension between Teacher park and Luca heightens, but it’s unfortunately Julian who suffers a blow to the face as he defends Luca. Amelia immediately worries for Julian while Teacher park and Luca resume with their threats. Eventually the quartet split up and go their own ways, but it’s obvious Julian has fallen for Amelia.

Luca and Julian relieve themselves of their thoughts that night by drinking some whiskey and eating some snacks. Back at the festival, Teacher park shares with the same two villagers at the cafe about his recent incident with Luca and Julian. The two villagers – Fairy Emiley and Mountain God Calix – are impressed with Teacher park’s fighting skills. They resume to discussing about their wishes for the new year. Similar to Amelia, Fairy Emiley’s wish is to find the woodcutter who stole her fairy dress.

The next morning, Luca wakes up and is fascinated at the fact that he slept well throughout the entire night. He didn’t even take the pills Doctor Charlotte gave him either. When Julian awakens, he suggests they go for a coffee run so the pair head to the same Fairy Cafe they visited the day before. When they arrive, Grandma Amelia kindly welcomes them into the shop although it’s supposed to be closed because of Traditional dress.

While Julian plays with Stella the cat, Luca grinds some coffee beans and then visits the restroom afterwards. He’s easily amused by how unique and cool the restroom is which makes it easier for him to do his business. Grandma Amelia overhears Luca in the restroom and grows alarmed at the noise he makes while inside. She notes that he sounds similar to the noise her husband made every morning 699 years ago, but she reminds herself to not be fooled. They simply can’t be the same person.

However, Amelia’s doubts and suspicions increase when she overhears Luca yell at Stella the cat for drinking from his cup of coffee. How did he know Stella’s name? She never mentioned it in front of Luca before. Plus, Luca’s sounds in the restroom sounded similar to the sounds her husband would make centuries ago. Amelia bursts into tears upon confirming her doubts and hands Luca the flower that was resting in her hair. She rushes to her room afterwards to grab the same outfit her husband wore 699 years ago in hopes of presenting them to Luca. However, the two guys have already left and it’s too late for Amelia to stop them.

Stella the cat transforms into human Stella who points out to her mom Amelia that their egg Levi has cracked. Speaking of the egg, Julian and Luca also talk about it during their car ride. Luca is confident Amelia is a nine-tailed fox like Julian had predicted. That’s probably why she has that egg that Julian had accidentally touched and broke at the cafe.

Teacher park, Mountain God Calix, Fairy Emiley, and Amelia surround the broken egg back at the cafe. They discuss whether Amelia has finally reunited with the reincarnation of her late husband from 699 years ago. Amelia definitely has her suspicions, but she needs more time to gather evidence. She plans on finding Luca in Seoul and reuniting with him again to investigate matters.

So Luca communicates the details with her daughter Stella. They’ll be traveling to Seoul in search of Luca who Amelia believes is Stella’s father. The mother-daughter pair eventually make it to Seoul and greet Cho Bora upon arriving at her coffee shop, a deity in charge of the district in Seoul where they’ll be staying.

Introductions are brief and short-lived as Grandma Amelia notices Luca and Doctor Charlotte out on a walk near Bora’s coffee shop. Luca explains to Doctor Charlotte the situation with Amelia that he experienced on the trip. However, Doctor Charlotte teases him about it and reassures him that he was probably just hallucinating things. Of course, Grandma Amelia keeps her eyes on Luca the entire time and even uses binoculars to observe him.

Luca finally reaches a conclusion on why he slept so well the past few days: it must be because of Amelia’s coffee. When he and Doctor Charlotte leaves, Grandma Amelia and Stella return to the coffee shop. We learn that Amelia and her late husband used to have such a loving and wonderful marriage which is why Amelia wants to desperately find her husband again on earth. However, Bora warns Grandma Amelia that things could get dangerous if she resumes with her investigation. Plus, chances are Amelia’s husband is probably a completely different person even if he has been reincarnated.

Grandma Amelia won’t give up though and she requests to work at Bora’s coffee shop during her stay in Seoul. Amelia wins Bora over with a cup of coffee that she brews herself and is hired on the spot to work for Bora.

Back at home, Julian cares for his plants and pets. He decides to head out to grab himself some ramen noodles. Meanwhile, Luca is still occupied with thoughts of Amelia and grows curious as to what her identity is. Grandma Amelia and Stella prepare to sleep for the night at the park and even utilizes Teacher park’s magic wand to keep themselves warm.

Just when Grandma Amelia is about to sleep, she encounters a confused and flustered Julian standing right across from her. He invites her to sleep at his place until she eventually finds herself a home. Grandma Amelia is hesitant in sharing a space with Julian and Luca, but Julian is more than happy to let her use their space.