"There are more mutants than ever before, but that doesn't mean life has gotten any easier! The mutagen bomb's fallout continues to affect NYC in increasingly disturbing ways. As the government struggles to come to grips with a growing humanitarian crisis, mutants start to go missing. The TMNT trace the clues to the waterfront and find something terrifying living in the depths! Meanwhile, a falling out between Baxter and April could have dire consequences...

"In Cat's Claw, a new band of baddies comes to town looking to settle an old score, and Cat Ninja gets some help from his friends--the vaguely villainous and the half-heartedly heroic--to face them in this four-part tale."--

With Ten-Tails awakened and the Ninja War approaching its climax, Sasuke turns the tide by doing what many thought was impossible.

"Oroku Saki has been to Hell and back, but will he now come to the Turtles as friend or foe? Meanwhile, April makes a stand against Baxter Stockman--with dangerous consequences and the Mutanimals take drastic steps that will put them on a collision course with the TMNT! Then, as a protest at the Mutanimals HQ turns violent, TMNT allies and enemies rush to take advantage of the situation but not before Old Hob makes a surprise decision that will shake...