The ruthless martial arts master Shredder has an evil plan to defeat Splinter and destroy the Teenage Mutant Ninja Turtles. Can he be stopped?

Nickelodeon's Teenage Mutant Ninja Turtles battle their greatest foe, Shredder. Young Ninja Turtle fans are sure to enjoy this novelization that features eight full-color pages and reveals Shredder's secret history and terrible schemes.

Abandon all hope... as the most infamous villain in the Turtles' universe, Shredder, returns! Oroku Saki's death is just the beginning, and his journey through the depths of the underworld proves to be anything but a divine comedy. How much of Shredder's soul will remain after he faces the horrors of hell—and as his twisted path leads him deeper through the underworld, will he be able to survive an onslaught of demonic forces? Or, more importantly—the truth revealed about his own soul?!

Old Hob, Slash, and their crew have become a force to be reckoned with, but a kidnapping leads them on an adventure more wild and dangerous than they could ever have imagined. Then, the Turtles return from Burnow Island to find unimaginable tragedy. Meanwhile, Casey prepares for a final showdown with Hun, and April has come into possession of an ancient scroll that seems to point to answers regarding the Pantheon. It all leads to a final showdown as Karai decrees a Gauntlet battle between Splinter and Shredder. Collects the Mutanimals mini-series, issues #45–50 of the ongoing series, the 2015 Free Comic Book Day issue, and the Casey & April mini-series.