Live streamer Lin Wan ventures into the mountains to prove the authenticity of her broadcasts, where she meets Lao Deng, the retired leader of the former Watchmen. Possessing extraordinary martial skills and a warm heart beneath a cold exterior, the two join forces to combat the channel blockades, malicious framing, and entrapment by the Gao Group. Step by step, they uncover the truth behind a border rescue case from twelve years ago, clearing the names of fallen comrades. At the same time, they lead the villagers of Jiuyangou in establishing a mountain goods cooperative, safeguarding the forest and their livelihoods. Having weathered numerous crises, the two transition from being at odds to sharing mutual affection, ultimately reaping career and romance, as the mountain guardian finally finds his home.