Thor Groot and Rocket take a shuttle to a place where Thor can get a new hammer, while the rest of the guardians go to knowhere to get the Stone the collector has, Thanks beats them to it, and takes gamora with him.
Spiderman and Tony rescue Strange and kick the alien off the ship, unable to steer the craft they are forced to ride it to titan where they run into the guardians.
Thanos knows that Gamora knows where the soul stone is, and tortures Nebula until she reveals the location. They travel to a remote planet where the soul stone keeper tells Thanos to get the stone must give up the thing he loves the most. He cries then pushes Gamora off a cliff.
On earth the avengers travel to wakanda to see if Visions stone can be removed so it can be destroyed, but Thanos army arrives, and battle commences.
The guardians. Iron man, spiderman and Strange attack Thanos when he comes for the time stone, and come close to pulling the gauntlet off, but star lord looses it when he finds out Gamora is dead, the plan fails and Tony is beaten and stabbed, Strange gives up the stone to save Tony's life.
Thanos arrives on earth with five of the stones, and vision makes Wanda destroy his stone, and him in the process.
Thanos winds back time, and pulls the stone from visions head killing him, and with all six stones Thanos clicks his fingers, and half the people in the universe die.
And with them half the heroes we have grown to know.
In the one post credit scene Fury manages to send a text to captain marvel before he too vanishes.