Before Elvis performs at a USO event in Vietnam, he and CeCe meet an unexpected contact as they investigate the possible use of the mind-control weapon.

As an Elvis fan convention takes place at The Peabody Memphis hotel, the singer experiences a wild, drug-fueled trip courtesy of Professor Leary.

While Bertie runs some interference with the Commander, Elvis tries to find out what Project Tupelo is — and why he keeps having flashbacks about it.

Elvis tries to stop the mind-control weapon from ruining his "Aloha from Hawaii Via Satellite" concert. To help, a stoned Scatter launches into space.