For many years, host Tobias Krell has worked with and for children. As "Checker Tobi", he is known to many young viewers. Now he can celebrate having his own offspring.

The greatest adventure of his life begins for Checker Tobi on a pirate ship in the middle of the sea. There he discovers a message in a bottle containing a riddle. If he solves it, he will reveal the ...

Tobi revisits an old childhood riddle: Who leaves the deepest traces in the earth? His search takes him to places like Madagascar, Spitsbergen, and Mexico, where he uncovers what connects them and ...