This play starts with the 1 taking the ball out. The 2 is in the weak side corner. The 3 is set up between the ball side block and the corner. The 5 is high side of the ball. 4 is opposite of 5, even with the FT line.

4 uses cross screen by 5.
1passes to 4 who dribbles directly to 3. 
3 will sets up defender and cuts back door. 
4 passes to 3 for layup.
2, who is spotted up opposite, can look for a pass from 3 if help comes to the ball.