Morty uses a horse breeding mount at Beth's workplace for self-gratification. Rick steals the "horse" semen to create a weapon against the CHUDs (Cannibalistic Humanoid Underground Dwellers), but instead creates a sperm army.
The President plans to lure the sperm to a giant human egg in Las Vegas to destroy them. Rickdependence Spray
The episode follows several escalating, absurd threads that culminate in a national crisis: Morty uses a horse breeding mount at Beth's
Morty desperately tries to hide that the monsters are his "children," but the truth is eventually revealed by the Sperm Queen . Rickdependence Spray