Mourning the sudden loss of her sister, Callie Danoff wants nothing more than to embrace a fresh start in a new town, leaving the haunting memories of her sister's death behind. But when her brother Ramsay drags her to a spooky boardwalk, the two become entangled with a local vampire gang and its enigmatic leader, Elijah. Callie refuses to accept their existence... until she and her brother unknowingly ingest vampire blood. Now, they only have three days before they turn into vampires themselves. With her carefree summer thwarted, Callie must trust a group she barely knows in order to save her family.