Avengers: Infinity War - Predicting The Entire Plot In 20 Steps
10. Banner Lands In New York, And So Does The Black Order
Having escaped from the clutches of Thanos during the attack on Thor's refugee ship, Bruce Banner will crash land to Earth (initially as Hulk - probably as a response to him almost dying in the vacuum of space) and transform back into Banner (just as he did when he crashed to Earth in Avengers and the injur to Hulk made him change back).
As the second Exposition Bro, Banner will then pass on the information about Thanos attacking Thor (and will probably assume Thor is dead just as Thanos did) having destroyed the Sanctum Sanctorum by landing on it and drawing the attention of Tony Stark. That reunion will kick off the new Science Bros team as Doctor Strange and Wong investigate why there's suddenly a sun-roof in their New York sanctum and Peter Parker arrives on a school trip.
Around the same time, the Black Order will attack as part of the quest for the Time Stone in Strange's possession, with their ship drawing the attention of Parker, who leaves his school trip to get his Spidey on and meets Tony Stark once more.