Secret Wars 2099 takes place in the (you guessed it) 2099 domain of BATTLEWORLD. The title surrounds a band of the 2099 version of the avengers-- all new characters, except for Hercules, all with their own intrigue.
Secret Wars 2099 #1
The first issue opens by introducing the characters in the setting of a battle against 'The Chain Gang' who have stolen something or another. We're introduced to Captain America (muscular female super-soldier); Hawk(wings and talons), Black Widow(kind of a spider-lady), Iron man (man in armor) and Hercules (demigod).
The real intrigue are the reveals, mostly closer towards the end: Cap is some split personality form of Roberta Mendez, who thinks she's a mere secretary or something but in reality becomes the super-soldier whenever she's "activated" by Mr. Stone; Black Widow isn't very reserved when it comes to lethal methods; The man in the Iron man suite is actually a, quite handsome, little person; and The Vision is some weird precognitive semi-comatose person in a pool of water.