Almost a year ago, Richard ditched his life as a retiree at the Everest Senior Living Facility to hunt monsters with his granddaughter, Burke, and his best frenemy, Stanley Kapchack. So when Burke’s ex-husband goes missing after calling to say something evil is following him, they assume the worst and head to his last known location.When they arrive in Santa Fe, New Mexico, they learn that the ex is in bigger trouble than they thought. The dead are awakening and even The Devil Herself is unable to stop what’s coming. It’s left to the three hunters to find the missing man, quiet the restless spirits, and send The Devil back where she came from before the citizens of New Mexico fall prey to the dark magic that has been unleashed.

Almost a year ago, Richard and Stanley escaped a nest of supernatural creatures posing as nurses at their retirement home. Together with Richard’s granddaughter Burke, they’ve crisscrossed the country on a mission to protect humanity from the things that go bump in the night, but Stanley’s had some mishaps along the way that have left him weak and weary. Burke suggests that a cruise might be just what the doctor ordered, and the two men go along with her plan.

But evil never takes a vacation.

From the moment they board, Richard suspects something is amiss, but Stanley is too tired to care, and Burke doesn’t believe him. When passengers start dying mysteriously, he’s forced to take matters into his own hands, but can he escape the eyes of an over-attentive activities director, a waiter who takes his job far too seriously, and a wealthy widow who’s determined to win him over long enough to find the monster and destroy it before it kills again?