Seraya transmigrates to underwater Atlantis and gains the Cub Heart Whisperer system, letting her hear young cubs’ thoughts. Using modern caregiving knowledge, she heals the black shark prince Morris and becomes famous. Facing head maid Nyla’s schemes and Sea King Talen’s cold authority, Seraya solves crisis after crisis and helps cubs of all clans overcome insecurity. After storms and life-or-death trials, she earns the royal court’s respect and protects the kingdom with Talen and the cubs.