Five inseparable friends, the Wonderboys, are forced to say goodbye because the Old Hag, the owner of their apartments, is about to sell their homes in exchange for a Maradona figurine. When the figurine is stolen by their idol Tonino Wonderboy, the new Munaciello of Naples, their adventure begins in the city's underground, in search of a mysterious treasure.
Ryota Moriyama, a senior at Kyoritsu University, receives a job offer at a first-rate company but gets dumped by Saki Nishino. His professor tells him that he can graduate on the condition that he joins the sumo club and competes in at least one match. With only a single member, Honoka Oba, for the past two years, the sumo club is on the brink of collapse. In order to graduate, Ryota endures Honoka’s strict training methods and starts to recruit other members.
Sarah is a young autistic woman with an extraordinary ability for lyrical singing. She begins taking lessons with renowned soprano Leonor Delise, but there is tension in the relationship. Sarah will learn to turn her silences into emotions; Leonor will have to restore her faith in humanity and reconcile with her daughter. Music will be the bond that transforms their lives.