Igarashi Raito (Tsuna Keito), a municipal worker for 10 years, has lived a stable life under constant pressure to avoid making mistakes in a society where a misstep could trigger a public backlash. One day, a man claiming to be Raito himself and saying he has come from the future, suddenly appears. The man predicts events in Raito’s future one after another―his dreams, work, friendships, relationships, marriage, and family. Raito’s stable daily life begins to waver under the influence of the man’s bold behavior and different values.
Accompanied by his friend Miyata, Sano returns to Izu, a seaside resort in Japan where five years before he fell in love with his wife Nagi.
Sano and Miyata, two childhood friends, are on a trip together in a resort hotel facing the Pacific Ocean. Miyata is devoted to conspiracy theories and he tries to get Sano to believe this idea. But Sano doesn't believe it, and they fight. As Miyata's phone keeps ringing all day, Sano loses patience and takes the call. It was a phone call from Miyata's father, who was saying unintelligible things, probably from dementia. Sano hangs up the phone in confusion and tries to go home with Miyata.
25-year-old Ichikawa Eiko works in general affairs. Even when she does her job properly, she doesn't get much recognition and is often scolded for even small failures. When she's depressed, she says, "I want to be praised", and gets overheard by her senior Bando. He tells her, "So enthusiastic, like the Nebuta Festival!" and "Ninja-like work!" and while she's confused by his way of praising, she gradually grows more comfortable with it. This communication begins evoking small miracles in the general affairs department and the company as a whole.
Shoji runs a store in a desolate town in northern Japan. After the death of his wife, he longs to end his life so that his daughter will receive his life insurance money. But suicide is not covered by his contract, so he seeks help and meets Saki, who is also suicidal. Yoshitaka Kamada raises profound questions about life, death, and the importance of humanity.
Kenmochi works as a novelist. He is able to recognize people who are suicidal. Kenmochi and his friend Urushihara meet these people and let them find hope in their lives.