The Darkling (Film, 2000)

When mechanic Jeff Obold befriends the enigmatic Bruno Rubin, he is introduced to a life of luxury. However, he uncovers the dark secret behind Rubin’s success: a creature called the “Darkling” that grants immense wealth in exchange for eternal companionship. As Jeff succumbs to the lure of his darkest desires, he learns the devastating cost of his dreams.