Morty accidentally contaminates a barrel of horse semen with his own, which Rick subsequently mutates into a biological weapon, creating a swarm of giant, sentient "Space Sperm". Plot Highlights
The episode follows several escalating, absurd threads that culminate in a national crisis: Rickdependence Spray
While largely a "23-minute sex joke," the episode features several underlying themes and parodies: Morty accidentally contaminates a barrel of horse semen