We see Peter's apartment, the camera goes into the main room, and keeps going, until it reaches Peter's bedroom. A hand reaches out, and pushes the door open, and we see a blue portal closing. The camera shifts to show the doorway. Happy stands there, looks freaked out for a second, then walks over to a bedside table, with a note that says
Going to fight weird universe-jumping Vampire dudes! Some dudes who look like me said they need me to go. See ya later!
The camera shifts back to Happy, who looks down at the note, stunned, as the camera cuts to black.