Charlie and Alex have a problem in the big, mean shape of Eric Lees, who loves flushing his victims' head down the nearest available toilet. When Zeus is summoned and told about the bratty bully, he realises that the name Eric Lees sounds a lot like the famous Heracles, and wouldn't it be fun revenge to make him enact the legendary Labours... substituting dragons for equally fierce dinner ladies and Cerberus for the school cat. Can Zeus succeed in sorting Eric out?