Child protection worker Dana Gibson arrives in the sleepy rural town of Killarney with one goal in mind: locate the whereabouts of foster child Jayden Maloney and return him to care. What she isn't anticipating is an unexpected attraction to her colleague's younger brother, Sean, or to become embroiled in their simmering family feud. When criminal allegations surface against a member of the local parish and a police task force discovers an increase in drug trafficking across the border, Dana is forced to consider that Jayden's disappearance is not simply a case of a teen on the run. To complicate matters further, torrential rain causes the Condamine River to break its banks, and the town gets cut off.As Dana continues to ask questions, tensions peak with the rising flood waters and she soon realises that the tight-knit community is not all that it seems. Long-held secrets start to unravel and loyalties are questioned, forcing Dana to make a decision about who she can trust and how much she is willing to fight for what she believes in.