Altered Spirits (2016)

Three friends, Valerie (Cristina Vee), Scott (Steve Weese) and Trey (Gregory Crafts), take a day trip to a sweat lodge spiritual retreat at the suggestion of another friend, Daniel (Jason Wishnov). The lodge, run by half-baked spiritual guru Godric (Richard Epcar), is situated on a portal to another dimension. The four friends are pulled into the alternate dimension, where four evil spirits from a past century attack the friends to steal their bodies and strand them in this empty dimension forever. It's a fight to the death as only some of them will make it out alive.