Cynical and insecure, Iris has long been envious of her twin sister Summer’s seemingly never-ending good fortune, including her perfect husband, Adam. Called to Thailand to help her sister sail the family yacht to the Seychelles, Iris nurtures her own secret hopes for what might happen on the journey. But when she unexpectedly finds herself alone in the middle of the Indian Ocean, everything changes. When she makes it to land, Iris allows herself to be swept up by Adam, who assumes that she is Summer. With her sister gone, Iris is one step closer to the hundred-million-dollar inheritance left by her manipulative father. On the edge of being exposed, how far will she go to ensure no one discovers the truth? And just what did happen to Summer on the yacht?