Spoilers
If you don't/didn't feel like reading this sequal for foggy and rainy, he is the back round facts
Jacob:
Edward left Jacob. Jacob went into a state of depression. Jacob tried many suicides, but he cant. He notices his body is changing; like the mark on his neck(where Edward released his poison) Now, that mark is a beautiful scar on his body. Brent saves Jacob from a box jelly fish tank, and thats where the love starts. But this is only one way relationship. Brent is actually a mythical creature hunter, and he is working for the Volturi to kill Jacob and the rest of his pack. Seth knows there is something wrong with Brent, and doesn't trust him—even though everyone else does. Then, while Seth and Bella are at the beach with Brent, Brent kills bella with an explisive bomb, and then he shoots Seth with a special bullet. Jacob sees this, and he's mortified. Then, Brent holds out a glowing orb. Edward appears and kills Brent—but it's too late. That orb has just wiped out Jacob's memory.
Edward:
Edward goes into a depressed state about leaving Jacob and.....he's pregnant with said persons son. During Edward's pregnancy, the baby send many horrible visions to Jacob. The baby, isn't a normal baby. It is actually very evil towards everything. Anyway, Edward has to endure much pain, but the Baby comes. And Edward doesn't die. The baby has extreme growth, and it takes from both sides of Jacob and Edward in personality and looks. But Edward and the Cullens also notice something, the baby has odd powers and......two different personalties. Then, Edward takes it upon himself to go see Jacob to tell him about his son when he is admitted to the sight of Brent trying to kill Jacob. Edward saves Jacob, and then finds himself in the hospital. Jacob wakes up, but he doesn't remember anything of Edward and his family.
Please, go on to the next story 'Hold Me Close And Whisper' since you know the backround of this story.