Time is still running out as people continue to age at an alarming rate. The Penn family is still at the center of our story as Nancy looks for a cure, Gus looks for answers and Payton looks for a reason to keep going. And we learn more about "The Seekers" motivations and involvement in "The Aging."

In their underground expedition for an engine part, Mansa and the boys stumble upon a mad scientist's lair, the twisted mastermind behind the Rat zombies plaguing the city. Cornered by his monstrous creation, they must rally their courage and ingenuity to outsmart the beast and make their daring escape from the underground labyrinth of horrors.