Marvel Disk Wars: The Avengers

In order to capture evil villains, portable capturing devices known as "Disks" were developed. However, thanks to Loki's machinations, both villains and heroes are sealed up in these Disks and scattered around the world. Amid the chaos, five youths obtained the power to restore these Disks-sealed heroes through a program called "Biocode." These youths received five Disks that Spider-Man, who narrowly escaped being sealed himself, retrieved. Thus, these five can restore Iron Man, Captain America, Thor, Hulk, and Wasp — the Avengers.

Synopsis from Anime News Network