Edie's uneven journey through her twenties is marked by subpar living conditions, uninspiring work, and sexual misadventures. As she tentatively fosters her inner artist, Edie's life is upheaved when she meets Eric, who's in an open marriage by agreement, though speckled with complications. Thrust into his home life, not by Eric but by circumstance, she becomes an awkward beacon for his wife and an inadvertent mentor to his adopted black daughter, Akila. 'Luster' captures the sharp turns of young adulthood, the quest for belonging, and the profound impact of unexpected relationships.