Devoted mother Marin believes her husband Ryan is simply working late during a blistering midsummer heatwave. In reality, Ryan abandons their five-year-old daughter Lily inside a locked, sun-baked vehicle in an underground parking lot so he can attend an extravagant birthday luncheon for his secret mistress Sienna and her son.
When Marin discovers Lily's kindergarten never received her, she races across town in a desperate search, only to collide with Ryan's icy indifference and sickening deception. Armed with security camera footage and forensic records, Marin vows to bring her neglectful spouse and his conniving lover to criminal justice.
