Liu Chenchen, a young woman with a rebellious streak, defies her affluent family by running away with her boyfriend to participate in a treasure hunt aboard a cruise ship. Initially, the adventure seems like a harmless game with the allure of a substantial prize, but it quickly escalates into a fight for survival as the participants find themselves in a perplexing and chaotic maritime world. Relying solely on her cleverness and the support of newfound allies, Liu navigates through the turmoil, uncovering adversaries and realizing that appearances can be deceiving. As her fellow contestants are targeted one after another, Liu must muster all her resources to find a way out.