The story starts with Zandor knocked out by the Laser Lancers and the Herculoids coming to the rescue. Magoth and the Lancers send a new wave of attackers which the Herculoids repel, but it is a ploy to take Dorno and Tara hostage. With Gleep's help, they seal off the tunnel the Lancers used to sneak up and repel them once and for all.