In the story, a camping trip to study a mysterious asteroid reveals a hidden vampire plot. Chelsea, a vampire, tries to protect Alan from Nick, who has turned their classmates into vampires using a gem from the asteroid. Chelsea saves Lena from Nick and becomes a target herself. Alan learns the truth about Chelsea and Nick's plans to sacrifice him to the asteroid's power source. Chelsea, risking her life, helps Alan escape, revealing that her knowledge and bravery, inspired by a podcast, were crucial in saving him.

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