Step 1

Defender 1 is forcing "home" (where the players are). As the mark, he/she doesn't permit throws to the "away" side.

Step 2

Attacker 2 is trying to get open. Defender 2 stays on the home side of him/her.

Step 3

Still trying to get open...

Step 4

Still trying to get open...

Step 5

Attacker 2 tries to go deep, so defender 2 takes away that threat.

Step 6

Attacker 2 comes back in, so Defender 2 tries to catch up and re-establish a position between the attacker and the disc.