Caroline and Max take side jobs as baristas in order to learn how to use the cappuccino maker they bought for their cupcake business.
Andy invites his old a cappella group to perform for Halloween, which leads to a confrontation with his frenemy. Meanwhile, Dwight tries to track down a madman in the office, and Jim and Pam fight over his new job.
During an interview for a job in Philadelphia, a manager gives Pam déjà-vu. Meanwhile, Dwight asks Angela to join him on a mission and Andy returns from his trip.
Nellie and Dwight spring into action when Pam needs help finding the vandal who defaced her mural. Meanwhile, Darryl has a hard time dealing with Jim's habits.
Everyone abuses the office's new espresso machine, Dwight takes Clark on a sales call, Darryl goes for an interview at Jim's company and Pam surprises Jim with a visit.