Sweep has sent out a letter to all his relatives asking them to come round to Sooty's House for a big family reunion. He receives only one reply, from his long lost brother, Swoop, who also sends them a picture of himself so they know what he looks like. However, Matthew thinks that Swoop has accidentally sent a picture of Sweep by mistake, as he looks exactly like him. In the bathroom, Sweep and his twin brother, Swoop are playing around with Sooty and Soo in trying to make them guess which ones which, when Sweep's cousin, Swipe arrives and makes it even more complicating.