Shu Lan, as the chief instructor of Gray Iron Delta District 21, was on duty when Lu Jinhan stole confidential files. Shu Lan shot Lu Jinhan in the chest but Lu Jinhan escaped. Shu Lan went to China to search for files and happened to meet Lu Jinhan in a wheelchair. In order to search Lu Jinhan's body, he pretended to fall and sat on Lu Jinhan's lap, playing the role of a weak little white flower, which made Lu Jinhan fall in love at first sight. During the confrontation, Lu Jinhan gradually discovered that Shu Lan was the chief instructor of District 21 who injured him. Shu Lan also discovered the secret of the original bombing. She and Lu Jinhan went from hostility to joining hands to solve the mystery together and protect justice and the truth amidst conspiracies and crises.
