This drama tells the story of the elder brother Jinren and his autistic younger brother Meiluren who depend on each other for life.Cooperating with Mei Luren, who can live a trouble-free life as long as he sticks to a fixed schedule, Lu Ren leads a stable and uneventful life.One day, a little boy calling himself “Lion” suddenly appeared next to them, and they had to take him in, and the story begins.

Although they were still not used to it, in the process of living with the three lions, the brothers understood that the background of his foster care was related to a certain incident. From then on, the peaceful days began to be swallowed up by a stormy whirlpool.