Twilight: The story begins when Bella Swan moves to Forks, Washington, and meets the mysterious Edward Cullen, who turns out to be a vampire. They fall in love, but their relationship is complicated by the dangers of Edward's supernatural world. Bella also becomes friends with Jacob Black, who harbors a secret of his own. The book explores their love, the complexities of vampire-human relationships, and the conflicts arising from Edward's vampire family.
New Moon: Edward leaves Bella in an attempt to protect her from the dangers of his world. Bella falls into a deep depression but finds solace in her growing friendship with Jacob. She discovers that Jacob and others in his community are werewolves. Bella becomes reckless in her attempts to hear Edward's voice and, as danger looms, she uncovers the supernatural elements surrounding her.
Eclipse: Bella's graduation approaches, and she is torn between her love for Edward and her friendship with Jacob. Victoria, a vampire seeking revenge for her mate's death, creates an army of newborn vampires to attack Bella. Edward and Jacob reluctantly join forces to protect her. The love triangle intensifies, and Bella must make a choice between her two loves.
Breaking Dawn: Bella and Edward marry, but their honeymoon takes an unexpected turn when Bella discovers she's pregnant with a half-human, half-vampire child. The pregnancy is difficult and puts Bella's life at risk. Ultimately, Bella becomes a vampire to survive childbirth. The story explores Bella's adjustment to vampire life, the challenges of parenthood in their unique situation, and the threats that arise from the vampire world.
The series follows Bella's journey from discovering the existence of vampires to navigating the complexities of supernatural love, friendship, and the challenges of embracing her own supernatural destiny.