Aquarium trainer Lin Wan and her dolphin partner Lan Bao are widely loved. Before a performance, Lan Bao unusually displays a seemingly gentle demeanor and shows aggressive tendencies. Researcher Lao Zhou warns that this is a dangerous disguise. During a live broadcast, Lan Bao ambushes Lin Wan, and Lao Zhou rescues her in time. Lin Wan discovers that the accessory given by her boyfriend contains substances that stimulate dolphins to lose control. The two suspect each other, while the truth is actually pollution from a leaked scientific research experiment inside the aquarium. Everyone joins forces to formulate reagents to purify the water body, rescue the two dolphins, resolve the crisis, rebuild trust, and complete a two-way redemption of life and soul.