"Young Skywalker is in pain. Terrible pain."

In 1968, during the Vietnam War, a Green Beret platoon known as the "Lizard Smokers", led by John Hunter, is ambushed by ninjas. In the midst of the chaos, Leeroy Hopkins loses his right arm in the ambush, Sgt. Oskar Kowalsky is attacked by velociraptors, and John is captured by the Viet Cong. While in captivity, John learns the art of ninjutsu from his captor, Colonel Yin. After John's training is completed, Yin sets him free, but warns him of a red ninja who betrayed his teachings. Yin is killed when his compound is bombed by the U.S. In 1986 Canada, John is paid a visit by Hopkins and is informed that his ex-wife Lori has been murdered and his daughter Jenny has been kidnapped by ninjas working for an illegal arms dealer. John and Hopkins participate in a joint operation between the FBI and the U.S. Air Force in Los Angeles to nab the dealer, but the operation goes awry when John recognizes the dealer as former Soviet Army Colonel Kinsky, who was involved in his former platoon's ambush. Hopkins is killed by the red ninja before Kinsky escapes. John travels to the Central American country of Val Verde and storms through Kinsky's villa to rescue his daughter, but discovers that Kowalsky has been converted into a cyborg. Jenny kills Kinsky by secretly placing a grenade in his pants, but Kowalsky suddenly disappears with her. John battles and defeats the red ninja in a duel, only to discover Lori behind the mask. Lori explains that an alternate future version of herself was the one murdered by the ninjas, and that Kinsky had supplied the ninjas with time travel technology since the Vietnam war. She then tells him that Jenny has been sent to 1998, where Kinsky is training his army to establish a new world order. After Lori urges John to save Jenny, he decapitates her and uses the last of her energy to travel to a post-apocalyptic wasteland in 1998. Upon his arrival, John reunites with Jenny, who is now an adult. She reveals that she reprogrammed Kowalsky to fight on their side. John also discovers that Hopkins is alive and well, driving a Pontiac Firebird Trans Am time machine. In a mid-credits sequence, the quartet attempt to travel back to 1986, but end up trapped in a video game programmed by Kinsky. They must find a way to escape from the video game world and stop Kinsky from conquering the world with his army. Directed by Benjamin Combes