spoilers:end of spoilers
-issue opens with Ultimate Punisher aiming his rifle at the clashing heroes of Earths 616 and 1610, then cuts to three weeks earlier
-616 Spidey fights the Ultimate Serpent Squad and gets help from the All-New Ultimates minus Kitty and Miles and is obviously bugged by everyone from Earth 1610 knowing his secret identity
-Ultimate Fury called a meeting in the Triskelion between the heroes of both worlds in order to fix the situation and returning everyone to their respective homeworlds, if possible at all
-616 Wanda is suspecting that Ultimate Fury might be in cahoots with Doom
-Ultimate Tony Stark is blamed for causing the current situation, he and Ultimate Amadeus Cho were working on the portal from Cataclysm which malfunctioned and brought 616 Tony Stark (Or maybe another version?) to their world
-issue ends with both factions distrusting each other, the 616 heroes depart in a quinjet and the Thors arrive at the Triskelion
There's not much action in this issue and the exposition feels a little lacking his well. Bendis proves once again that character interaction is his strong suit. Brace for decompression.