Synopsis
Michael Berengetti sends a message to Joe Fixit (the grey Hulk) to say there's an incoming problem he wants fixed.
And incoming to Las Vegas is a quinjet containing the West Coast Avengers. Chairman Hawkeye wants to see the sights and maybe get properly remarried to his co-pilot Mockingbird. But Iron Man reminds them they're here to stop a turf war between mob leaders including Berengetti and his mysterious enforcer.
Suddenly an alarm goes off and the plane starts bucking. Wonder Man looks out a window and sees a large grey/purple-suited figure shooting at them with 2 tommy-guns. The bullets must be something special because they rip through the walls, narrowly missing Tigra. And the quinjet goes down.
The 5 Avengers leap out of the crashed plane. They see that their foe is Hulk-sized. But they know Hulk is dead, and this guy denies being him anyway - he says he's Mr Fixit. So they figure this must be the mystery enforcer.
Hawkeye orders an attack. Tigra leaps on Joe but her claws can only damage his clothes and he hurls her away. A vibranium shock arrow doesn't have much effect either. Mockingbird leaps next and smashes her battlestaves in his ears. Then leaps away as Iron Man gives full repulsor blasts. But Fixit hits him for 6 too.
Wonder Man is last up at bat. But Fixit appears to run away, and Simon Williams follows. Joe reaches the Luxor Pyramid casino and does the comics strong guy trick of lifting it up by the edge of the base. Wondy realises what's going to happen and streaks in with his hip-jets. Next thing we see is him holding a mound of building up with his comrades underneath (and a bit of help from Shellhead). Until he hurls it away.
(What he throws appears relatively small so probably Hulk just threw a large chunk of the Pyramid at the Avengers.)
Now WM is angry and he jets full tilt into Mr Fixit. They strain against each other. But, still denying being the Hulk, Fixit slowly pushes Simon back. And then throws him away - a long way away.
Hawkeye desperately fires arrows as Mockingbird and Tigra retreat. And he calls on Tony Stark to do his Iron Man stuff. Now it's his turn to jet into Fixit - who doesn't budge but grabs IM in a bear hug.
Tony says he wants to talk, so Fixit leaps them both away. He lets IM go and Stark removes his helmet. Tony says he knows it's Bruce Banner in there. Mr Fixit effectively admits who he is, but says he's not Banner or Hulk anymore. He's Joe Fixit and he likes this life. He may be a Mob enforcer but he promises Tony that on his watch only the guilty will suffer. Then he leaps away.
The other Avengers see him leap, but Hawkeye says they don't go after him until Shellhead's back. And then they take him as a team. But when Tony does return he says they're leaving. They can trust Fixit to keep things under control.
(It is unclear to me whether their quinjet is still working or Iron Man summons another 1.)