Peter learns about phone apps and overloads his phone with them. He buys a new phone with more memory and gives his old phone to Chris, which causes a series of horrible events. Meanwhile, Stewie joins a tennis club and invites Brian to be his tennis partner.

When Stewie refuses to sleep in his own bed because of nightmares, Peter can't stand it, so he goes to sleep in the attic. Peter turns the attic into a man cave and all of the guys begin hanging out there, which makes Lois incredibly angry. Meanwhile, Brian helps Stewie overcome his fears by building a device to go into his nightmares and defeat his demons.