It's Halloween and Marshall and Simon are stuck at home babysitting Simon's younger brother Harley. But the night isn't as boring as they expected... when they leaving Harley watching a monster movie, he somehow gets zapped into the TV. And while Harley is trapped in the TV, the mummy from the movie is running wild in the house, and the boys need to find a way to switch them back again before Marshall's parents get home.
—Phil G