After teenage outcast Velma Dinkley is accused of killing a popular classmate, she has just 24 hours to find the real murderer. There’s only one problem: Velma has sworn off solving mysteries – forever.

When Principal Rogers enrolls all the female students in a self-defense class, Velma and Daphne must work out their complicated relationship on the mat. Meanwhile, Norville vows to get answers from Fred… by any means necessary.

With Crystal Cove High’s hottest girls under attack, Velma questions her feminist values, while Fred analyzes his own views on women. After seeking Daphne’s help, Norville finds himself embroiled in a new mystery.

After Crystal Cove instates a city-wide curfew, Velma has no choice but to spend the night with band geeks… and Fred. Later, Daphne makes a discovery of her own.

As the Crystal Cove Fog Festival nears, Velma struggles to find answers to the town’s serial killer problem – and a date. Then, as Daphne explores feelings for a mysterious stranger, Fred and Norville face off for the Fog King crown.

After finding themselves trapped in a cave, Velma and Daphne are forced to confront their complicated relationship. While Fred proves he really does love women for their brains, Gigi vies for Norville’s attention.

Given 72 hours to uncover the identity of the serial killer, Velma is forced to live a lie with Norville, while Daphne and Fred concoct a story of their own to get back in with the Brains.

While Velma races against the clock to find the true serial killer, Daphne pursues a new career path, Fred finds a way to channel his rage, and Norville attempts to get as far away from his former best friend as possible.