The Two Things At The Very Top Of My Things-I-Never-Want-To-Do List
As Sam assigns each member of the pack someone to fight against in the Cullen family, Jacob realizes he has a choice after all: "I had not been born to kneel to him."
Jacob takes his natural position of the Alpha – a position he had conceded to Sam, because he didn't want to be a leader at that time. Sam feels betrayed and accuses him of choosing his enemies over his family. But Jacob ditches the tribe and takes off to warn the Cullens.
Jacob is now an Alpha without a pack. But not for long. Seth joins Jacob to protect the Cullens, despite Jacob's desperate attempts to make him go back to the pack. They realize that now that there are two alphas, they can't hear the thoughts of Sam's pack.
After Jacob and Seth warn the Cullens of Sam's decision to attack, Seth patrols the perimeter. Jacob sees Bella lying in a hospital bed, connected to an IV. Her condition has obviously worsened.