5 Get Schwifty

A massive alien head (a "Cromulon") appears over Earth, demanding to hear an original song, so Rick and Morty improvise "Get Schwifty". The whole planet is abducted and forced to participate in a musical talent show, where the losers' planets are obliterated via plasma ray. Morty steals Rick's portal gun and leaves him alone with Ice-T to make a hit original song and save earth. Morty stumbles across Birdperson (living with Tammy since S1E11 episode Ricksy Business), who persuades him to go back to Rick. Ice-T is revealed to be an ice alien who does not initially care about Earth, but he later changes his mind and saves the planet. Rick, Morty, and the US president win the competition by improvising "Head Bent Over". Meanwhile, Jerry, Beth, and Summer enter a religious cult based on an incorrect interpretation of the message from Cromulons. The movement quickly disbands after realizing it was all a musical talent show. Post-credit scene: Back at Alphabetrium, Ice-T's home planet, his father rewards Ice-T by lifting his exile and restoring his true form, "Water-T". The Numbericons attack and Water-T rushes out to battle. This is an action movie promo.