Yelena Gorgo arrives at GreenLit’s Colorado facility to investigate resistance from within. Accompanied by Emilia Glazkov and naïve hacker Steve Goldberg, she uncovers the buried remnants of a forbidden neurochemical experiment: Project Scarecrow. After ousting the anxious Dr. Thorne, she recruits the unnervingly calm Dr. Chen and recovers a living sample of the compound—Unity.