Plot Synopsis

While riding the bus, Molly, a working-class woman in her thirties, meets Sophie, a wealthy twenty-six-year-old party girl, recently released from rehab. They bond as they reveal their family problems to each other, but Molly begins to fear Sophie when she proposes that she is willing to kill the drug addicted ex-wife of Molly's husband if Molly will kill her controlling father. Soon the ex-wife turns up dead and Molly tries to avoid Sophie, but the increasingly erratic sociopath stalks her, demanding Molly take care of business. When dear old dad is killed in a suspicious car jacking, Molly fears for the safety of her family. She eventually entraps Sophie into admitting her role and is ultimately freed from the tangled web of the crazy bus girl.