The Ghostmaker (2011)

Plot

A group of college pals stumbles upon a 15th-century coffin that grants them the ability to traverse the realm of ghosts. Initially, their escapades in this ethereal dimension are light-hearted and fun. However, the "Box of Shadows" eventually unveils their darker instincts and hidden cravings. As they delve deeper, the friends are ensnared in a sinister realm, confronting the harsh reality that the boundary between life and death exists for a critical purpose. What begins as a thrilling adventure rapidly spirals into a chilling battle against their own malevolence.