In a story told from Blackie the hawk's point-of-view, Blackhawk, Chop-Chop, and Andre are captured by a gang of gem smuggleers after their jets are destroyed by a waterspout. Blackie has to keep the crooks from harming them before the rest of the Blackhawks can come to the rescue.
Blackhawk, Andre, and Hendrickson and two crooks are accidentally sent back into time when a criminal scientist's time machine is activated. The time-travelers make friends with cavemen and fight off strange beasts, while in the present, the other Blackhawks search for a way to bring them back.