Double episode: Two audio play stories on one CD. With songs for grumbling, sulking, and being happy again. The audio plays are based on the equally titled picture books. Total running time approximately 50 minutes. For girls and boys aged 3 and up. The Grump Troll is jealous. The Grump Troll and his friends want to build a pool, but that's easier said than done. Luckily, the beaver happens to pass by. He is a perfect builder and must know how to do it right. The hare, hedgehog, mouse, and bird are impressed - but not the Grump Troll. Do his friends like the beaver better than him? The Grump Troll... that's enough. On the other side of the forest, there is a fantastic adventure playground - with a fork slide and a chestnut bath, with a treetop ship swing and a bouncy pillow, with a climbing rock wall and a large sandy lake. The Grump Troll and his friends try everything out. But the mood changes when the inconsiderate cat shows up with her two friends and simply takes everything she wants. A rumbling begins in the Grump Troll's belly. That's not how you treat others, is it?.