Hoops and Yoyo can't wait for Halloween, but they have waited until the last minute to begin their search for costumes. When that search leads them to the mall, they are accidentally locked inside after closing. They discover that this favorite daytime haunt is actually haunted at night. But through a series of frightening events, they learn that monsters aren't always who they seem to be. It's a Hoops and Yoyo adventure that's so funny it's scary!