While the Rangers are still trying to get the hang of pulling together the Zeo Megazord and Red Battlezord, Maceface remains at large. King Mondo, now with the combined arrowhead halves, prepares to make use of their great powers. Tommy's brother David remains captive in a cave beneath the Native American Reservation, which soon spawns a monster from an ancient evil spirit known as Autochthon. Meanwhile, Lt. Stone gives Bulk & Skull a psychiatric evaluation test.