The Destiny You Must Follow

The box of wishes, the box of fate. Enclosed in here is the path you await. Away you go now, to where this is true and real. To begin your destinies, meet yourselves, the doppelgänger and your mates. AKA some loving fans end up in the film, it's from Avengers onwards and will have canon divergence from the end of Avengers (if you don't count the extra characters as a change).