Plummy is happily floating on his lilo on the pond. Pliff and Plops ruin the peace and quiet by driving so close to him on their motor boats, that Plummy falls and sinks. Underwater, he grins and turns himself into a huge drain and pulls the plug out by himself, whereby the pond water drains away like a huge whirlpool and Pliff and Plops are left sitting on dry land. Remorsefully they turn themselves into a pump, and fill up the pond again and in no time at all, all three of them are sitting on a huge lilo for three.