The Sliders arrive on a world where combustion engines were outlawed by the government due to pollution. But a biker gang is fighting to keep their engines and Mallory falls for the gang's sexy leader.

When SG-1 gates to a new planet, they are surprised to find another SG team under attack from Jaffa troops. They render aid to the unknown SG team, only to find they are not really SG soldiers, but Jaffa learning how to imitate SG soldiers, and for the Jaffa counter force to learn how to fight the SG teams. These Jaffa were under the control of Apophis, who is now dead. Can the team, now held prisoner by these trainees, convince these trainees that Apophis is both a false god and is now dead?