It was finally summer in Shiver Land. Under a dark blue sky, the five friends Ping, Hops, Gru-Gru and Polaah were playing and Munch was sniffing for fresh herbs. “Rhubarb complot”, he suddenly shouted. “This is the best food in the whole world.” Immediately they all pricked up their ears. If that was so delicious, they had to cook rhubarb compote. So, they started to look for rhubarb but would only find herbs and moss, fish and algae, seaweed, urchins, shrimps and fish, worms and a mouse. "A mouse does not belong to it,” said Polaah. But what does actually belong to a rhubarb compote?