Ren struggles with the death of his longtime friend Kaoru. He finds a painting of a girl that Kaoru left behind. Ren sets out on a journey to find the girl.

'Plastic Love Story' presents Coming of Age of three girls in Japan. Eri tries to remedy her anxiety and loneliness by being self-destructive. Rina relies on her relationship with boyfriend to compensate for her broken dream of being a ballerina. Kanae lost her brother when she was a child and seeks a solitary life in an abandoned hut by a seaside town. The three girls encounter three men in their lives. When they meet, their 'Plastic' love story begins.

In a corner of Tokyo, a man named Natsuo lives as a yakuza and a woman named Natsuki works part-time. Although they rarely think about their families, they attempt to reunite with them. Brother and sister, father and daughter; the distance between them begins to shrink, but... This film portrays the dynamics of people trying to co-exist in nature and in the city. Even though two individuals may be insignificant in the context of a large society, one life meets another and they move forward. This is a movie about their small footsteps.