Having escaped from a cult as a child, a mother must face her past when its sinister members break into her home and attempt to steal her eight-year-old son, David. Now the two are on the run pursued by a detective determined to save them both. Since his aborted kidnapping something has changed in David and the boy has succumbed to a mysterious illness. Following her maternal instincts to save him, his mother commits unspeakable acts to keep him alive but is losing the battle. Soon, she has to decide how far she is willing to go to save her son.
Jamie Lee Curtis returns to her iconic role as Laurie Strode, who comes to her final confrontation with Michael Myers, the masked figure who has haunted her since she narrowly escaped his killing spree on Halloween night four decades ago. This film, the 11th film in the "Halloween" series, will ignore the events of all previous sequels, picking up 40 years after the events of the original film.