After surviving a tragedy, paramedic Jenny struggles with PTSD and her life spirals out of control when she falls into a gambling addiction. Concealing her suffering from husband Chris, best friend Alison and daughter Rosie, Jenny returns to work, but she is unable to deal with her crippling anxiety. During a public meltdown, a stranger comes to Jenny's aid, Sasha, and the pair strike up a bond. Later, Jenny makes a confession to Sasha about the extent of her gambling addiction.

Chris is rocked to the core when he uncovers the truth about Jenny's gambling. In desperation, Jenny revisits Sasha and they discuss a plan to steal drugs from Jenny's workplace as she tries to come up with a way to secure the first instalment of her repayment to loan shark Connie Bertram.

Jenny is confronted by a heartbroken Chris, who has discovered another secret she has been hiding. Finding sanctuary at Sasha's, Jenny feels her resolve weakening as the lure of the poker tables, and a shiny new bank card, becomes almost too hard to resist.