Jiang Cheng, a high-achieving student, is sent away to live at the steel mill where his biological father works. Between the strange, unfamiliar surroundings and a father whose manner is crude, he sinks into a low mood. That changes when a chance meeting brings him face to face with Gu Fei, known around the mill as its delinquent. From there the ONA traces the bond between the two in a drama of rescue and hope, told through a slice-of-life lens with a psychological edge.