Simon, a lonely boy who has lost his father in a car accident a few months ago, has to face rising conflicts when Mario, the new and mysterious school teacher, starts dating Sarah, his beautiful mother. Simon doesn't accept the new father figure and discovers Mario's real intentions while struggling with his own fears and the indiscreet look of a nosy catholic priest. In a school trip, Mario disappears mysteriously letting Simon and his friends alone in the woods; while wandering around, the boys witness a black mass and pick up an enigmatic medallion that belongs to a satanic in the mass. When Mario realizes the boys found the medallion, he wants to keep it, stay closer to Sarah and much closer to Simon, bringing deadly consequences for all. Simon tries to warn his mom, but Sarah is in love and rejects any accusation It is only when the connections between Satanism, pedophilia and Mario's past are revealed and Sarah is framed to leave the house letting Simon alone that she realizes the danger she had put her son in, but... is it too late? Or will Sarah be back on time to protect her son?