Fearing for their lives, Walt proposes a plan to kill Tuco using ricin, a potent toxin.
The title has a dual significance that layers immediate plot goals with long-term foreshadowing: 1. Seven Thirty-Seven
The episode ends on a cliffhanger as Tuco abducts Walt and Jesse at gunpoint, leading directly into the next episode, "Grilled". Fearing for their lives, Walt proposes a plan