Macy, Billie, Zane, and Miles sneak into Station House No. 4 to destroy the weapon used to kill Morgue Macy. Tensions rise when they get locked in, and cracks begin to appear in their friendship.

Macy and Billie research the glitter clue, while Zane uses the time machine to redo his date with Sunny, accidentally unleashing a Victorian-era axe murderer.

Macy and Miles time travel to the past to retrieve William Murdoch's pocket watch, while Billie and Zane get sidelined and become suspicious of Miles, causing a major rift between the friends.