A graduate student and martial-arts expert rents a room in a house owned by a single mother who lives there with her son. A local street gang is trying to recruit the son, but the new tenant tries to help the boy's mother keep him out of the gang. When they learn of this, they target both the mother and her new tenant.

Scott James, a veteran martial arts expert, is recruited as the protector of the wealthy and beautiful Justine after she becomes the target of a ninja clan. When Scott finds out that his ruthless arch-nemesis, McCarn , is involved with the stealthy and dangerous criminals, he is eager to settle old scores. Soon Scott is facing off against McCarn and the entire ninja horde in an effort to take them all down.

One of the US Air Force's most modern tactical aircrafts, an F-100 with a new laser guidance system, crashes into the sea near Malta - a region where the Soviet forces are highly present, too. The CIA immediately sends out their best secret agent, Ken Tani, to salvage the system before it falls into enemy hands. To ensure his loyalty, they bring his two young sons to a nearby hotel on the island.