Hot in Day, Cold at Night

Reality and fantasy melds as a Korean documentary film director attempts to capture life in the small town of Gojo, Japan.

Jina is the top employee at a credit card company call center. She avoids building close relationships, choosing instead to live and work alone – until she is suddenly tasked with training a new recruit.

Facing financial uncertainty and entering middle age, a married couple in their early thirties contemplate whether it's the right time to have their first baby.

At her dad's funeral, Kyungun meets her uncle Jaemin, a complete stranger. He bilks her father's insurance money. She demands her money back, but he unashamedly refuses. To get her money back, she joins his next scam.

Part I : A middle-aged woman gets off a bus at Muju Terminal. She passes through the town and walks into a forest. She starts to search for the vestiges of her life from beyond the grave. Part II : A young woman, Minjae, returns to her hometown of Muju and starts to work at the county office. Her mother is displeased that her daughter has returned to the hometown. One day, Minjae’s friend from college, Kyungyoon, who hadn’t been in touch for a while, comes to see her.

You earn as much as you work, and you live off that money. This simple proposition has always been a problem for Jung-cheol. At the soybean paste factory he went to work for in the bitter winter, he dreams of travelling to warm Philippines in spring - as long as he survives the winter making his portion of the soybean paste that he promised the boss. But the more he struggles to live, the worse it gets. And soon, the fermentation room turns musty with the black mold spreading from the thousands of ferment boiled soybean lumps.

A fine arts student meets an attractive bartender, and the two women begin an intimate relationship.

A middle-age couple visit a temple in Chuncheon where they spent their first night together 30 years prior. On the way, one of them cannot find their phone and hurries to find it. As the night unravels, they will come across an ex-lover, a friend, and a young couple who resemble them 30 years ago.

Young-tae and Mi-joo are happy to move into a small but cozy monthly rental house. However, Young-tae’s business partner suddenly breaks the agreement to run a restaurant together.

Kyung-ah works as a caregiver and lives alone. The only one she can rely on is her daughter, Yeonsu, but it's hard to see her after her independence. Meanwhile, Yeonsu, who was suffering from his ex-boyfriend, argues with him again and heads home. After Yeonsu left, Kyung-ah receives a shocking message.

Hyeonjae was a war correspondent who quit due to his trauma of war. Thinking of the special communication he had with plants as a kid, he returns to his grandfather's arboretum. At that very place, he gains the courage to live on and decides to run a plant café in the city. To his customers who seek him out with their stories and plants, Hyeonjae provides a remedy for not only their plants but also their hearts.

Taeyoung and Jumi, a married couple who have closed down their shop, are at a loss. Then, like a miracle, new life arrives. The road through pregnancy, childbirth, childrearing, and caregiving proves far more grueling and arduous than expected. Overwhelmed by extreme physical and mental exhaustion, the couple fumbles, falters, stumbles, and slips again and again. And yet, their child is pure, absolute joy.

Second-generation migrant worker, Soo is released after receiving probation and community service sentence for his use of violence. Along with his friend Pil-sung, he ends up working as brokers for illegal migrant workers. While fulfilling his community service duty, he meets surfers. Soo falls in love with surfing as the surfers Ddong-ggo and Hae-na teach him how to surf.

Myeonghun, who dreams of becoming a film director, and Seonhee, who dreams of becoming an actress, find comfort in each other's presence and have a romantic relationship, even promising to get married. However, when things don't go as planned, Myeonghun, disappointed, reflects on his dreams and reality. He tells Seonhee that it would be better for her to get a job.