Step up, you've got what it takes!

Bente has already saved his class twice – without anyone suspecting a thing. Except, of course, for his best friend Leonie. It all started with a mysterious door that suddenly appeared before him, inviting him on the wildest adventures. Now, during the summer holidays, it is happening again. The door reappears! Leonie is in danger. And only Bente can save her. If he dares.