Uh-oh, it's Turtle trouble! Raphael has infiltrated the Kraang's lab and discovered the Mutation Chamber which can turn humans into mutant creatures. Climb the ladder with Victor, spin the electrodes and knock him into the mutation tank. Turn the knob to activate the mutation. When the transformation is complete, open the doors and unleash the fearsome Spider Bytez. Help Raphael to outwit the giant creature and escape before it grabs him with the huge claws on its head. Includes 2 minifigures with weapons and accessories: Victor and Raphael, and a Spider Bytez figure.