In a twisted jungle overrun by mutant vegetation, the Science Ninja Team faces their worst betrayal yetthe Blackbirds, once their trainees, now their enemies. Arrogant and armed with the latest tech, the Blackbirds dominate early, but the Science Ninja Team fights back with something stronger: experience, loyalty, and heart. With a surprise assist from the mysterious Raven, the Blackbirds are forced to retreatbut the emotional scars of betrayal linger, even in victory.