The recluse Jintan is stumped when his deceased childhood friend Menma suddenly appears one day and asks him to make her wish come true.

Trying to figure out Menma's wish, Jinta decides to make his long-delayed return to school. However, his return is overshadowed by rumours about Anaru having been spotted at a love hotel.

Jinta asks Menma if she would rather stay here so that they could be together, to which Menma responds that she plans to go on to heaven and be reincarnated.

The gang's cermony to help Menma pass on didn't go as planned, and they realize they need to put their own selfishness aside to figure out what Menma really wants.