'Top of the Lake: China Girl' is a crime mystery story that finds Detective Robin Griffin (Elisabeth Moss) recently returned to Sydney and trying to rebuild her life. When the body of an Asian girl washes up on Bondi Beach, there appears little hope of finding the killer, until Robin realizes 'China Girl' didn't die alone. Robin looks to the investigation to restore herself, but her problems are personal. Haunted by a daughter given up at birth, Robin desperately wants to find her, yet dreads revealing the truth of her conception. But her search to discover 'China Girl's' identity will take her into the city's darkest recesses and closer than she could have imagined to the secrets of her own heart.