The Earth has descended into a new ice age of -45 degrees Celsius. At the evacuation center, dozens of people who have fled are living on the edge of their lives. In a world where civilization has collapsed, money and status have no meaning and every blanket and canned food is sought after, values have changed drastically. Humanity is faced with an extreme situation where only those with a strong desire to live will survive. Kimura Shoko, a genius con artist with two previous criminal convictions, is determined to do whatever it takes to survive in this new world. For some reason, the shelter she arrives at values family over everything. As the "mother" of a "masquerade family", she faces harsh days. Behind Shoko's explosive desire to survive is a desire to see her son again.

Mima Taro is a writer who has hit a slump. Tired of city life, he moves into the house he inherited from his father in the mountainous Hayabusa. When he joins the fire brigade, he becomes involved in a series of arson cases and suspicious incidents. As Taro searches for the truth, a huge conspiracy comes to the surface.

May 31, 2021—as COVID-19 continued to spread, Masayasu Wakabayashi and Ryota Yamasato were on stage in front of an empty house getting ready for their live stream show. Although they’re from different comedy duos, The Nankai Candies and Audrey, they decided to create Tarinai Futari to perform new jokes about their complexes. Their final show is today.

Shinozaki Ayumi receives a strange call telling her that an earthquake will occur one hour from now. She hangs up the phone thinking it was just a prank call. But one hour later, she feels herself sway a little. When she turns on the television, she realizes that what the caller said about the time and the epicenter was on the mark. After that, she receives another phone call from the same caller who identifies himself as Kazama. He says that he knows what will happen in the future because he went back to a certain spot from the future and made a fresh start in life. Calling this time travel “Repeat”, he invites Ayumi to be his guest. Besides Ayumi, Mori Keisuke and Tendo Taro are among the eight people who have been invited by Kazama to participate in “Repeat”. These eight people who are making a repeat as a result of past regrets, are hit with a series of unanticipated events.

In a residential area, a man is murdered by another man, who broke into his apartment. Sergeant Kizaki, who is working near the area, hears a gunshot and runs towards the apartment. Detective Oomura already is at the scene of the crime.