Barney Gamble is a veteran who strives to lead a calm, peaceful life. He got a job in a regular school, and only memories of past battles remained. But one day he encounters people from the future. They arrived at this time to recruit a squad of fearless fighters. In the future, aliens attacked our planet, and the time machine became the only chance for salvation. Gamble fits all the parameters to become one of the recruits. He goes to the future, where he will fight with alien invaders who surpass humans in speed and dexterity ...