Xiaoyou was born with Asperger's Syndrome and was unable to communicate with others. After his parents died in a car accident, his only brother Xiaoguo existed in his world. In order to open up Xiaoyou's world, Xiao Guo brought him from his hometown of Nantong to Nanjing, where he worked part-time to support Xiaoyou while studying. After graduating from China Southern Airlines, Xiao Guo chose to become an aircraft maintainer and became good friends with Cheng Jun, a pilot from the same company. Chengjun likes Xiaoguo, but Xiaoguo only cares about his younger brother Xiaoyou and his girlfriend Manzi. In order to please Xiaoguo, Chengjun fanatically pursued Xiaoyou, thinking that as long as he controlled Xiaoyou, Xiaoguo would never leave.
The story spans 15 years, from Nanjing to Shanghai and then to New York. Three top handsome guys with different temperaments are constantly entangled with each other, and their love and hate are unclear. When he was a child, Xiaoguo often took Xiaoyou for wild rides on his motorcycle. At that time, Xiaoyou said, even if one day I leave you, I will turn into a feather and fall on your back.
Intent: Help and warmth between brothers