A terminally ill father prepares his chaotic family to care for his two young kids and face life without him — but they must put old quarrels to rest.

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.