When Mateo's comic creation, Z-Blob, follows him from a dream back to Brooklyn, Mateo and his sister realise the Dream World is real, and in danger!

After a daring mission to save their friend in the Dream World, Mateo and Izzie find the nightmare has followed them back to the Waking World.

To craft their own hourglasses and become official Dream Chasers for the Night Bureau, Mateo and his friends must defeat the Dream Forge guardian.