A family believes they are aliens from other planets and tries to save Earth from impending calamity.

It has been 14 years since the murder of an elementary school student by a classmate. At the time, Akari was deified by the name Sunny, "the cutest murderer in criminal history". Two men, abduct Akari. Holding her captive, they upload pictures and video of her on the internet. Meanwhile, Akari makes every effort to escape from her prison.

After one of their shoplifting sessions, Osamu and his son come across a little girl in the freezing cold. At first reluctant to shelter the girl, Osamu’s wife agrees to take care of her after learning of the hardships she faces. Although the family is poor, barely making enough money to survive through petty crime, they seem to live happily together until an unforeseen incident reveals hidden secrets, testing the bonds that unite them.