Scoobster is smitten with Thelma, but when the hex girls show up on the scene, Scoob and the mystery solvers can't avoid being wrapped up in their mystical adventures. While unraveling spooky enigmas to music-making together, Scoobs and the gang build an unbreakable bond with the gloomy girls. Let's accompany them on their hair-raising ventures and unending exciting quests!