Starting position.
Two goes up the line, and sees she's being blocked from reaching the line by her defender.
She makes a sharp turn, gaining a step or so on her defender, and three starts running up field.
As two gets open, she gets the dump pass. Three continues up field.
While the disc is in the air, three turns around to gain some space on his defender.
Now three continues this cut and receives the swing.
Reset to the original position.
If the dump goes as planned, ...
but the defender on player three disallows the "under" cut ...
... player three can just go deeper and receive the disc there.
Reset to the original position.
If player two thinks she is able to outrun her defender upline, but for some reason it doesn't work (e.g. player one's marker prevents the throw) ...
... player three can come in, either trying the same thing or going down field directly (shown in the following step), while (important!) player two clears out.
Player three now gets the dump. Player two can now get ready to receive the swing.
Like this.