Struggling to escape the Night Hunter's cage, Zoey and Mateo are trapped in the Grim Realm while MadTeo competes in a dream crafting duel at Castle Nocturnia. But Izzie is suspicious of MadTeo's true identity, which makes her his first target.

A close call with the Never Witch places Mateo in the forests of Wildoria, a dream realm of beasts, searching for his lost hourglass while his evil doppelganger is sent by the witch to infiltrate Castle Nocturnia. Beau is on an adventure in the dream world with Zoey when the Never Witch orders him to track down Mateo.

Struggling to rebuild a relationship with her estranged dad, Zoey is off her game as the team gears up for the second R.E.M. trial - Beat the Clock! Logan steps up his training to beat Astrid.

Set in the past, the dream chaser duo Hannah and Beau argue over keeping the Nightmare King's sword or having the mysterious Gnorfs destroy it. While they seek a dream relic worthy to trade for the unmaking of the sword, young Oz searches for Lunia as he ponders his future with the Night Bureau.

With realms going missing, the dream chasers feel like they should be taking the fight to the Never Witch instead of training for R.E.M. trials, which isn't going well either. Zoey's haunted by her most painful memories and Mateo continues to only dream craft Z-Blob-related items. The Night Hunter, now forced to work for the Never Witch, mysteriously keeps tabs on the kids in the waking world.

Despite Grand Inspector Royce's orders, the dream chasers go after their missing memories. They try to track one of the Never Witch's ravens back to her hide-out while Phil covers for them at Castle Nocturnia, releasing a swarm of bed bugs to keep Royce distracted.

When Logan's viral song fizzles out, he's determined to prove he's a serious musician. He unleashes his sick beats on Dream Brooklyn and starts an EPIC dance party! Or so he thinks... Back in Real Brooklyn, Mateo and Izzie become suspicious of their dad's new girlfriend.

When the Sandman and the Murky Realm disappear, things get seriously strange. Students start having intense daydreams, allowing dream creatures to slip through the rift in broad daylight! And it's not just any dream creatures, it's the sirens...

Frustrated by the loss of their memories, the dream chasers go on a hunt to find the thief. Zoey's convinced the Night Hunter is to blame and ventures to the Grim Realm to track him down, while the rest of the gang finds the Sandman to see if he has any answers.

The dream chasers are back with a level 7 aberration on their hands: A doom sheep is running amok in Brooklyn! But that's not all – Mateo is neglecting his dream chaser duties and those creepy ravens just won't quit following them.