When Rakel finds out she's six months pregnant after a one-night stand, her world changes. She is absolutely not ready to be a mother, but since abortion is no longer an option, adoption is the only answer. That's when Ninjababy, an animated character who makes Rakel's life a living hell, turns up.
This time, they travel on holiday with Aunt Thea to Summer Island. There they meet Eddy who is an expert on all the challenges they can face on a magical island. It is rumored that a sea worm has been observed in the fjord, and it will not be long before the energetic sea worm expert Blegen shows up, with his strange devices and instruments. It will be an exciting summer holiday with friendship put to the test, exploration in nature and the hunt for the mysterious sea worm.