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In an alternate present-day version of Oakland, black telemarketer Cassius Green discovers a magical key to professional success, which propels him into a macabre universe of "powercalling" that leads to material glory. But the upswing in Cassius' career raises serious red flags with his girlfriend Detroit, a performance artist and minimum-wage striver who's secretly part of a Banksy-style activist collective. As his friends and co-workers organize in protest of corporate oppression, Cassius falls under the spell of his company's cocaine-snorting CEO Steve Lift, who offers him a salary beyond his wildest dreams.