Definition: In this task, five ordered key facts are given. All the given facts are expressed in natural language. Your job is to generate a story 100 to 1000 words long, that includes all the facts given as input in their order of appearance while expanding upon them to produce a broader, yet coherent, narrative.
Input: Fact1: building burned to ground years ago, Fact2: Brian travels with group of friends, Fact3: strange and unsettling discoveries trigger Brian ’s disturbing memories of mother ’s research, Fact4: Brian ’s mother built revolutionary machine, Fact5: addictions as materialized in form of mutant children hungry for human flesh side effect

When Brian Carter’s mother dies, he is surprised to learn that he has inherited The Sanctuary, home to her controversial experimental addiction treatment center. Having previously believed that the building burned to the ground years ago, Brian travels there with a group of friends and meets Haley, a mysterious friend of his mother, who acts as their guide through the impressive, monasterylike building. During their tour it becomes clear that something sinister lies beneath the surface. Despite their misgivings, they follow a secret passageway underground and come across strange and unsettling discoveries that trigger Brian’s disturbing memories of his mother’s research. Ultimately, they are confronted by her terrible secret: Brian’s mother built a revolutionary machine that cured people of their addictions but, as a side effect, those addictions materialized in the form of mutant children hungry for human flesh. Sharing the dark bowels of the building with swarms of fireflylike creatures that they use to lure their victims into death traps, the mutant children begin a wild hunt, with the new visitors as their prey. Fighting to stay alive against the inconceivable, Brian and his friends soon realize that some things are better left hidden.