What do you do when your sink's on the blink? In Tapton everyone knows who to call – the Toucans that can do, Sammy and Paul! But when new plumber Flash Rover swings into town, the Toucan's telephone stops ringing. Flash Rover may be faster and cheaper, but he's also a rotten cheat and it isn't long before the people of Tapton find themselves in deep, deep water . . .