First Day is the thirty-first main mission in Marvel's Spider-Man. After Peter Parker exits the lab of Otto Octavius, he makes his way downtown to the F.E.A.S.T. shelter, where he has promised he will meet Miles Morales on his first day of work.
On his way there, he spots Miles being mugged by a group of thugs. Players must intervene to save him. After rescuing him, Spider-Man gives him pointers on how to fight.
Players than take over as Miles, proceeding to the F.E.A.S.T. shelter. They must sneak their way through a Sable International-controlled zone, using the hacking app Miles developed to do so. Once at the shelter, an extended scene plays where Miles meets up with Peter and begins to get the lay of the land. After Miles meets Aunt May, players again resume the role of Peter to exit the shelter.