In this uncertain world, Rick Grimes (Andrew Lincoln) and his band of survivors must not only fight the dead, but also face a whole new fear The living. In this 16 episode season, the series, Rick and his fellow survivors continue to seek refuge in a desolate and post-apocalyptic world and soon discover that there are greater forces to fear than just the walking dead. The struggle to survive has never been so perilous. This season also introduces new characters, including the Governor (David Morrissey) and fan-favorite Michonne (Danai Gurira), along with her zombie pets.

Michelangelo, Donatello, Leonardo, and Raphael are back to battle bigger, badder villains, alongside April O'Neil (Megan Fox), Vern Fenwick (Will Arnett), and a newcomer the hockey-masked vigilante Casey Jones (Stephen Amell). After supervillain Shredder escapes custody, he joins forces with mad scientist Baxter Stockman (Tyler Perry) and two dimwitted henchmen, Bebop (Gary Anthony Williams) and Rocksteady (WWE Superstar Stephen InchSheamusInch Farrelly), to unleash a diabolical plan to take over the world. As the Turtles prepare to take on Shredder and his new crew, they find themselves facing an even greater evil with similar intentions the notorious Krang.