The second adventure of Maja and Ben takes the siblings into the mysterious deep sea. There, they encounter many extraordinary creatures. The children can expect an exciting story composed of reading texts and mini-audio plays. To find out what happens next, they need to read the printed texts themselves. As a reward, there is an exciting audio play segment afterwards.

Maja and Ben discover a corridor with mysterious doors in their grandmother's abandoned neighbor's house. Behind each door awaits them and their dog Oskar a fantastic new world and an exciting adventure. With tiptoi reading-listening adventures, beginner readers and reluctant readers are motivated to read independently with a lot of fun. The children can take turns reading and listening to audio plays. The self-reading texts are tailored to the abilities of first-time readers. Cheating doesn't work, as the texts are not read aloud. Exciting games and funny sounds provide variety and support text comprehension.