Oliver is a banker and portfolio manager and leads a life in the fast lane, which one day comes to an abrupt end, as he builds a self-inflicted accident on highway with 230 km / h and raced through a guardrail. When he wakes up in the hospital again, he faces a devastating diagnosis: paraplegia. Actually, a rehabilitation stay of several months is planned in the hospital, but Oliver soon falls on his head and ends up in a disabled shared flat with the name "Die Goldfische"

This is the third and final part of the now famously successful trilogy, where Mr. Müller and his problem kids Chantal, Danger and Co. once again take up arms against their sworn enemy, the German education system.