The film opens on pretty much the end of ragnarok, only Skor and Valkery are nowhere to be seen, most of the survivors appear dead on the floor, Thanos tells Loki to choose between the cube and his brother, and he chooses the cube, but only it it looks like Thor will die, then he feins handing it over, only to try and stab Thanos instead, then set the hulk on him.
For a few seconds the hulk has the upper hand, then Thanos beats the shit out of him, and keeps on punching him, almost to death, before Heimdal sends him back to earth, using the last of his strength to open up a biofrost, before Thanos kills him, then in front of Thor, strangles Loki to death. Then Thanos leaves the ship and it explodes, presumably killing all asgardian survivors, and the gladiators from sakar.
The hulk drops into Doctor Stranges house, and turns back to Banner, shortly before the giant donut ship heads to earth, Strange, Stark, Wong and Banner go outside and have to fight off some of Thanos henchmen, but Banner discovers he cant hulk out. They do what they can, but Strange is kidnapped and taken into the ship, Stark and Spiderman catch a ride too.
More to follow.