The purpose of the system is to build a screening wall, which makes it possible for LW to run in and shoot.

The ball starts with CB, who passes to LB.
LB passes to LW and runs in to the right.
LW runs over behind RB and CB, who has run in and sets a screening on the defending center.
LB passes the ball to RB, who makes a pressure outward.
CR sets a screening outward beside CB.
When LB is outside CR, she stops and screens against players coming from behind.
LW continues running over, receives the ball from RB and shoots in front of the "wall".