Deep in the unexplored waters on the west coast of the Pacific Ocean, there is a secret undersea laboratory called Lancer. The heroine Elaine and the new Lancer member Leo entered this territory at the same time. The ruthless Lancer boss James and the sunshine scientist Karl, as well as various novel research equipment, all this seems dreamy, but what kind of crisis will it experience? What deep secret does Lancer have, and how will it be solved? Justice, resistance, love... Let's take a look at Lancer's secret and enter the science fiction and redemption of the future world.