Dark Beast! is the first episode of Scooby-Doo! And The Paranormal Adventures.
Velma has signed the Mystery Inc. gang to a Mistville Academy, so they could have some time to focus on classes and studying. Scooby and Shaggy share a room, Daphne and Velma share a room, while Fred has a room on his own. After the first day at school, the gang goes to sleep. The school principal, Joseph Garrison, goes for a walk and steps on something. The ground suddenly starts to collapse and a huge hole appears. Then, a huge light comes out of the hole and a dark figure appears in the light. Garrison screams and this wakes the gang up. The gang goes outside to see Garrison running away. Garrison tells the gang that he saw a monster. Scooby and Shaggy freak out, while Fred, Velma and Daphne are determined what's going on. After Garrison escapes, a dark and huge beast appears. Fred is determined to show that it's another crook in mask. Fred starts pulling the beast's head, but it doesn't go off. The head is not a mask and it's a real monster! Scooby and Shaggy run away and the beast is following them. Daphne sees the hole the beast came out of. Velma discovers some writing in a hole and starts reading it: "The place of an ancient Dark Beast. Dark Beast is an evil being that nearly destroyed the Earth, but it has been sealed away by the villagers who used a stone ball with a great power that can seal the beast. But when someone breaks the ball, the Dark Beast will be free.". Fred finds parts of the ball and he, Velma and Daphne decide to seal the beast again, but first they have to find Scooby and Shaggy. Meanwhile, the beast is still chasing Scooby and Shaggy around school. They hide in a cafeteria and attempt to take some food from the refridgerator, but the beast appears again. Scooby and Shaggy run away again and bump into Fred, Daphne and Velma, who later explain everything to them. The gang manages to repair the stone ball, but the beast appears again. Fred attempts to use the stone ball to seal the beast, but it doesn't work. When the beast attacks Fred, he drops the ball and it lands on Scooby's hands. The beast starts chasing Scooby. Scooby escapes near the hole and the beast catches up to him. Out of fear, Scooby gets the ball in front of the beast. When the sun starts to rise, the ball starts to glow and a huge beam comes out of it, sucking the beast inside. The ball goes into a hole and the hole disappears. The gang congratulates Scooby for saving the day and they go back to school.