Workers at the Fukushima Daiichi facility in Japan risk their lives and stay at the nuclear power plant to prevent total destruction after the region is devastated by an earthquake and tsunami in 2011.
At a high school entrance ceremony, high school student Kotoko Aihara, who isn't that smart, notices pretty boy Naoki Irie. She falls in love with him immediately. Kotoko initially doesn't express her feelings to him, but finally has a chance to tell him how she feels. Unfortunately, Naoki turns Kotoko down, saying "I don't like dumb women." One day, Kotoko Aihara's house is severely damaged by an earthquake. Until the house is rebuilt, Kotoko Aihara and her father decide to live with her father's friend. When Kotoko Aihara moves to her new temporary house, she is surprised to learn that Naoki Irie lives there as well.
Takuto Hirabayashi now works at a company, Kyohei Hano works at a trading company and Hajime works for an apparel brand. The three of them are friends since high school and live together in a share house. A day when they come back home they find a baby inside the house with the writing "It's your son". No-one of them wants the baby and they keep on blaming each other, but the child falls sick and they are forced to take care of him.
