On the eve of college graduation, six best friends embark on an epic weekend to celebrate—but it takes a fatal turn. Nearly 20 years later, the survivors are reluctantly reunited by a blackmail text threatening to expose the truth about that fateful night.

Marina Quiroga, a daring upper-class girl with a detective’s soul, sets off to catch the serial killer that has been terrorizing her town with her faithful butler Hector’s help.