Watch Shake, Rattle & Roll 11 (2009) Official Trailer

Claire is a young interim doctor in a provincial hospital. Once, she encountered a female patient who is suspected of carrying a deadly flu virus. Afterward, she began to experience demonic visions, eventually, one demon entered her and began to take control on her. Claire's aunt brings her to Father Ronnie, who evidently was Claire's ex-boyfriend. Their relationship rekindles as they battle the demons out of Claire's body.