On a secret Island, somewhere in the middle of the ocean, lives Rufus together with the other sea monsters. He keeps to himself because he is different than the other sea monsters - he can't swin.
The sea monsters enjoy happy and carefree life, but they have one big fear: to be discovered by humans. Luckily, they have Uncle Ludvik to protect them. He has Chinese dragon blood in his veins, and can blow smoke out of his nostrils and hide the island in smoke whenever a ship comes nearby.