Continuing their assault, the Turtles and Splinter encounter mutant clones in a Foot Genetics Lab and a near indomitable foe, the Foot Mystic Ninjas. The Turtles finally make it to the Shredder's throne room, but they are interrupted by an exosuit-clad Baxter Stockman, who hopes to get revenge on both the Shredder and the Turtles.