Venom returns, poses as a prison janitor, breaks into jail and disarms (or kills) the anti-symbiote guards.
Then, he visits Cletus Kasaday’s cell, and eats Carnage.
He then heads to Peter Parker’s house to eat Spider-Man.
Because it’s literally the next thing on his “to do” list.
But during the big fight, Carnage makes his belly upset, he gets the hiccups, and has to flee the fight until he can finish digesting the red symbiote.
Meanwhile, a prank caller keeps calling MJ and threatening to kill Peter.