Death Valley

Chloe, a bioengineer, is doing secret research in a cold war bunker when she becomes trapped there. She's desperate to save her research and calls for help. A small mercenary team comes to her aid while encountering armed people outside the facility who want to steal the research. Once the mercenary team breaks in, they encounter a monster. This leads them to realize Chloe knows more about what's going on than she's telling them.