The song, called Fearless, is performed by Olivia Holt (Kickin' It), who stars in the film as Skylar Lewis -- a young girl who's forced to take up the family business of hunting monsters when she accidentally frees some of the creatures from a secret chamber.
Other songs in the movie include Had Me @Hello and Nothing's Gonna Stop Me. All of the songs will be a part of the Walt Disney Records compilation, Make Your Mark: Ultimate Playlist, available Tuesday, October 9.
Check out the full Fearless video when it premieres Friday night during Disney Channel's Gravity Falls, airing at 9:30 p.m. ET/PT. Girl Vs. Monster premieres Friday, October 12 at 8 p.m. ET/PT.