Die Tintenfische – Unterwasserdetektive greifen ein

Season 1, Episode 4: Alarm on the Lake

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Mr. Lechner rented a submarine in order to be able to build on old times as a submarine diver. In an unobserved moment, the two children Peter and Monika climb into the boat and dive with it. They get tangled up in a tree trunk at the bottom and can no longer get up. The squids Pit and Tomy have to intervene...