Fact1: Freddy Ana brushes him off persists in conversation, Fact2: bus is involved in apparent crash, Fact3: loud music draws her to Freddy 's house, Fact4: Ana Remembering recording at shows it to Freddy hospital, Fact5: doctors discuss cutting off life support for real-time conversation Ana
Output: In 2012, Ana, a failed writer who works as a nurse, meets Freddy, an aspiring comic book artist, on a bus. Though Ana brushes him off, Freddy persists in conversation. The two are surprised to find that they live on the same street in a small town, but before they can talk any further, the bus is involved in an apparent crash. Ana wakes up in her bed, late for work. When she arrives at the hospital, it seems deserted, though she finds a mysterious, barelyintelligible audio recording. Although the town initially seems empty, loud music draws her to Freddys house. After comparing experiences, the two set off to explore the town. At a police station, they find that all communications channels, including radio transmitters, are down. As they explore the town limits, they discover a dark wall of fog encircles the town and is slowly encroaching. Unwilling to drive through it, they retreat to the center of town, which they discover has suddenly reverted to 1992. As Freddy unsuccessfully attempts to get the attention of passersby, Ana observes a younger version of herself interact with her Aunt Lu. After they suddenly shift back to 2012, Freddy estimates that they have three days until the fog engulfs them. The two discuss theories, including whether they have died in the bus crash. Remembering the recording at the hospital, Ana shows it to Freddy. They are surprised to hear a realtime conversation in which doctors discuss cutting off life support for Ana in three days, as she has been in a coma for two months. Ana explains that after her aunts protracted coma and eventual death, she signed a living will. Freddy suggests that the fog represents Anas impending death, and the two reluctantly enter the fog to find answers. They find a locked door, thousands of keys, and a chain. They flee back to town when they hear monstrous growling, and a chained monster chases them. As they gather supplies, Freddy experiences a memory of his stepfather, who attempts to bond with him after Freddy gets in trouble at school. Ana describes a play she wrote about a monster similar to the one that chased them, and Freddy shows her a comic book that he made that ends with a locked door and thousands of keys. Convinced that their experiences and memories are being brought to life, the two go to a fairground they both visited on the same day in 1992. There, they observe a brief meeting between their younger selves. Convinced that they must face the monster, they set a trap, but it only frees the monster from its chains. Freddy and Ana hole up in a church. When Ana suddenly becomes ill, Freddy leaves to confront the monster by himself. Ana is horrified to see him dragged off, and she retreats to her childhood house. There, she experiences a memory in which she performs her play with Aunt Lu. During the plays climax, Freddys friends coerce him into petty vandalism that results in an accidental fire and Aunt Lus coma. Back in 2012, a bruised and battered Freddy appears and apologizes before sinking into unconsciousness. When the monster appears, Ana kills it and takes the crucial key from its corpse. She drags Freddy to the door inside the fog, and when the key opens it, she pulls him across the threshold so that they escape together. In the hospital, Ana wakes up and rushes to find Freddy, whom she learns has already been released. His caretaker explains that Freddy has partial amnesia and remembers little except the crash itself. Using his sketchbook and an emotional embrace, Ana helps him to remember their shared experiences.