Full Synopsis
Rick and Morty visit another planet and witness “The Festival”, an annual event where the local populace commits crimes for one night without consequence. Rick compares it to The Purge movies. Morty forces Rick to rescue Arthricia, a young alien girl. She betrays them and steals Rick’s gun and spaceship, leaving Rick and Morty to fend for themselves. Rick calls Summer and has her send advanced power armor suits for Rick and Morty’s protection. Morty goes on a killing rampage until Rick knocks him out. Rick allows Arthricia to use Morty’s suit and helps her to kill the corrupt nobility who implemented the Festival in the first place. The planet’s inhabitants decide to create a new society from the ground up, however, rioting breaks out over disagreements about it. One of them suggests keeping the Festival. Morty feels guilty over all the aliens he’s killed, but Rick wrongly blames a candy bar that Morty has eaten, thus appeasing him.