Penny Carter's quiet life in Southbend, running a nursery with her ex father-in-law, is turned upside down when Lisa, the young daughter of her late husband, is unexpectedly deposited on her doorstep. The unwelcome houseguest stirs up more than just memories of Penny's husband's betrayal, when a cyclone leads to the discovery of a skeleton buried next to the town cemetery.

As the mystery around the unsettling discovery grows, Penny, supported by her enigmatic neighbour Flint, begins to question everything she thought she knew about her own childhood and her mother's death. Family secrets long thought buried come bubbling to the surface, as other shocking revelations see Penny and Lisa in an ultimate race for survival.

But what other secrets will the Wet season uncover, while the whole town is cut off from the rest of the world?