A mysterious message in bottle promises 'checker' Tobi Krell the voyage of a lifetime with a pirate captain, if he can solve the cryptic clues is a magical parchment. Each refers to a natural phenomenon and can be solved after learning from a friendly scientific specialist in some country, such as a geologist, a volcanologist and an ice core drilling expert.

Checker Tobi und das Geheimnis unseres Planeten

Tuna are among the top predators in the oceans. But the hunter is also the hunted: many species are overfished. Can we use the riches of the oceans without destroying them?