Meet Artie and Rex, professional Dream Cleaners. A night out on the job takes a turn south when Rex goofs off and causes their Dream Cleaning truck to malfunction. Now the dreams of their target, a young kid, start spilling into reality.
It's Harry's third year at Hogwarts; not only does he have a new "Defense Against the Dark Arts" teacher, but there is also trouble brewing. Convicted murderer Sirius Black has escaped the Wizards' Prison and is coming after Harry.