Tom's 15-year-old daughter Jess has started a relationship with schoolmate Ollie. When he meets the boy's mum Beth in a chance encounter, a spark is lit between the two married people and both their families' lives are turned upside down.

The tension sizzles as Tom and Beth are forced together to help Ollie and Jess, while Hannah demands consequences for the teens' betrayal, but that might threaten her marriage.

Tom and Beth take their affair to the next level on a weekend away, but the time alone results in the reminder of a painful truth for Tom.

The pressure of supporting Neil through his trial causes Beth to unravel. Tom's consumed with the guilt of betraying his family, but it leads to more deception.

The teens' bad behaviour causes Hannah to reveal her painful past, while Beth decides to confront hers. The weight of choice looms over Beth and Tom.

Jess' bombshell explodes everyone's lives. Tom and Beth's fantasy bubble is burst and they're faced with the consequences of their actions, but what does the future hold?