The Super Friends close their first series by responding to ocean calamities when a mysterious red tide appears in the ocean that upsets the ecological balance of the sea. It is the work of Holo and Zara, a pair of water people from another planet who are trying to gather enough silicon to get their mother ship, inhabited by the rest of their people home. The Super Friends are aided by Prof. Matey and his submarine which is used as their base. The biggest highlight of the episode is watching the big swim chase in the ocean when Aquaman chases after Holo.