After his spy school training, Ben Ripley is on his first solo mission of infiltrating the White House and stopping a possible presidential assassination, but when his assignment runs into trouble, he isn't sure he can trust his friends for help.

Arriving at the manor of a grandfather they barely know, William and Maxine are whisked away to New York City, where they receive help from a tenacious girl in the wake of their grandfather's disappearance as they find themselves targeted by gangsters and assassins.

As a massive outbreak of supernatural Visitors baffles Scotland Yard and causes protests throughout London, Lockwood & Co. continue to demonstrate their effectiveness in exterminating spirits. Anthony Lockwood is dashing, George insightful, and Lucy dynamic, while the skull in the jar utters sardonic advice from the sidelines. There is a new spirit of openness in the team now that Lockwood has shared some of his childhood secrets, and Lucy is feeling...