Mitsuhiko Amano is a 46-year-old salaryman who has just been laid off by his company. On top of that, his wife has told him that she wants a divorce and that their daughter is going with her because she just can't stand even to look at her father. His life in crumbles, and he visits a soapland... but before being able to actually do anything there, he slips, seriously hits his head and loses consciousness. As he opens up his eyes again, he recognizes his high-school classroom, a professor, and his classmates (among them, his future wife, Sachiko). At first, he thinks that it's his life flashing before his eyes just before death, but then he realizes that he's actually back in 1986, in his 16-year-old body! Does this mean he'll have another chance? What will he do now? Will he muster up the courage to talk to Satsuki (the classroom's beauty he used to have a secret crush on) this time? Will he change his life? ~~ Adapted from the manga “High Posi” by Takashi Kira.