It's a remake of X-Men #2, when the X-Men first met Vanisher.
The X-Men train in the Danger Room to improve on team work. Professor X sends them on thier next mission to stop the Vanisher. Together, the X-Men stop the Vanisher and Professor X makes the Vanisher forget that he is a mutant.
— Description from Comic Vine community (comicvine.gamespot.com).
