Cyd and Shelby use Barry's new invention to teleport themselves to New York City's Spooktacular in Central Park and get trapped in a haunted house with Riley and Lucas from "Girl Meets World."

The girls go back in time to stop GDD CEO Janet Smythe from starting the corporation, when they learn she is behind the future lab. But their plan prevents other major events from happening in their lives, including them living together, and Barry and Marci falling for each other.