When Brianna Donahue was three years old, her mother mysteriously disappeared while farming in Merriwell Bay, Western Australia. Even though she is presumed dead, her body has never been found. Committed to the family's farm, Brianna works the same land with her father Russell, while almost single-handedly raising her two children as her husband Caleb works as a fly-in fly-out criminal lawyer in Perth. One scorching summer's morning, her son Trent goes missing and, while frantically searching for him, Brianna must come to terms with the fact that her marriage has large cracks in it. Over two thousand kilometres away in South Australia, Detective Dave Burrows receives a phone call reporting stolen sheep from an elderly farmer. When he and his partner Jack arrive at the farm, it's clear that Guy has early signs of dementia. Following a conversation with his wife Kim, Dave becomes intrigued with Guy's family history. Was there a child, or was there not? No one seems to know. While trying to save her marriage and battling the threat of bushfires back in Merriwell Bay, Brianna is faced with challenges: her father's new girlfriend, who on the surface seems pleasant, seems to have a hidden agenda; Trent is having nightmares, triggered by his accident; and Beau, her youngest, is afraid to let her out of his sight. So how will Dave's investigation impact Brianna's world? Suspenseful and incendiary, Suddenly One Summer is an intriguing and heartfelt story of the unlikely connections of life on the land.