The rich and beautiful Liu Chenchen (Ruby Lin) and her boyfriend Xiaochuan (Jin Shijia) boarded the mysterious "Tianya" cruise ship by chance, and entered into a thrilling treasure hunt game with four other unidentified winners. However, frequent accidents turned this tempting treasure hunt game into a crazy killing that put people to death. On the isolated high seas, the distraught people began to suspect each other, the direction of things became more confusing, and death was approaching step by step. Who is behind the darkness and controlling everything? Where will this sweet couple who strayed into the magic wheel escape to?