The drama tells the story of five young people with very different personalities, who form a "Searching Person Group", adventure and grow up in the process of searching for people, and eventually finding their true selves in the fog.

Lin Yuan Su meets Die Qi, Qiu Ling, Xia Gu Duo, and Zhou Qi after they all participate in a search for a missing dog. The five people are of different ages, come from different backgrounds, and have very different personalities, but they decide to form an agency that looks for missing people in their free time. At first, they don't see eye-to-eye, but after some time they form a strong friendship. Through their experiences of looking for missing people, they each also find themselves. As the unlikely group of 5 gets closer, Lin Yuan Su finds the courage to start looking for his father, who has been missing for 22 years, and enlists his fellow hunters in helping him.—MyDramaList

After participating in the online "finding lost dog plan", Lin Yuan-Su gets to know four talented people. Soon, they found a non-profit organization for the sake of finding those who are missing as an interest. Gradually, their friendship is getting closer and the meaning of looking for "the missing" seems to appear. A strong emotion is calling Yuan-Su: Where is his missing father? Can they find Yuan-Su's father out?—iQIYI DISTRIBUTION

Lin Yuansu, a loner in the city, met four people with different personalities, Ye Qi, Qiu Ling, Xia Guduo, and Zhou Qi, by chance after participating in the "dog hunting project" initiated online. Through this cooperation of searching for dogs, they formed a public welfare search organization and helped those in need in their spare time. At first, they didn't get along well with each other, but working together made them gradually establish a deep friendship and gain the touch of helping others through the twists and turns of their experiences. They also healed their own wounds in the process of searching for people, faced their inner selves, found their true selves, and understood the true meaning of searching for people. After seeing too many scenes of relatives reuniting, Lin Yuansu finally admitted what he wanted deep in his heart and courageously proposed to everyone that he wanted to find his father who had disappeared 22 years during his growth process. Everyone decided to help him find his father and happiness.—CPOP HOME