They'll all be on a Zoom call at the beginning of the movie and then the rest of the story just follows Ant Man trying to set up the perfect birthday party for his daughter and accidentally foiling the plans of Doom over and over again.
All told by Louis.
It's also a really convenient way for Doctor Doom to shift the blame for various misdeeds. For example, there was an X-Men comic way back in the day when he was working with Arcade (because Latveria was currently under the control of revolutionaries), and together they kidnapped the X-Men and, among other things, encased Storm in a metal shell. Ororo is claustrophobic (or was, I think it was mentioned in a comic the last few years that she went to therapy to get over that), so she did not take that very well. More recently, Storm became one of the leaders of the Arakko mutant offshoots on terraformed Mars, and had a nice polite dinner with Doom where she brought up the incident and he's like "Oh, that was a Doombot. Sorry about that."
To get more women in the theatre? Gambit sounds like a topless dancer nickname.
He'asmadeanamefor'imself.
Since the Fox X-Men aren't likely to survive these two movies, Disney is probably currying a lot of favor with Tatum by giving him his shot and maybe even a decent sized supporting role before they off him. And lots of superhero movie fans will be excited to see him in the role.
