One Big Mess is the 35th episode of the 2013 series of Calimero.

In this episode, Calimero and friends make a mess in Do Vinci's studio, then try to use Do Vinci's Clever-Cleaner to tidy up, but it goes berserk and ends up in Calimero's house. Can they tidy up before Calimero's parents return?

This episode can be watched here: