Lao Jin (Huang Bo) fishes all day to support his daughter Jin Lina (Zhou Yiran) to study abroad, but his daughter dies mysteriously after being stabbed 17 times. The biggest suspect is her boyfriend Li Miaomiao (Zhang Youhao). The angry Lao Jin embarks on a journey across the sea to seek revenge, but Li Miaomiao keeps absconding under the protection of her mother Jing Lan (Zhou Xun)... In this mystery of human nature, who can reach the other side of love and forgiveness?