Macduff and Malcolm join forces.
Characters: 
Macduff

The Thane of Fife, loyal to Malcolm. He urges Malcolm to return to Scotland and challenge Macbeth, but is interrupted by news of his family’s death.

Malcolm

Heir to the throne of Scotland. He wants to make sure that Macduff isn’t luring him back to Scotland and Macbeth’s clutches, so he plans to test Macduff’s loyalty.

Ross

Thane and messenger who has abandoned Macbeth to fight for Malcolm. He brings Macduff news of his family’s death.

Doctor

A doctor in the English court.

Scene Summary: 

Macduff meets up with Malcolm in England and the two make plans for how to overthrow Macbeth and take back their kingdom. Malcolm’s a little suspicious of Macduff though, so he attempts to suss out whether the thane is loyal to Scotland, or just in it for himself. After Macduff proves himself loyal, the two of them join up with ten thousand troops to take down Macbeth. Ross arrives, bringing news that Macduff’s family has died, but that if he returns to Scotland, there are a lot of folks who would happily join with him to fight Macbeth. Vowing revenge, Macduff resolves to return to Scotland and murder Macbeth himself.