Lin Feiyu, sect master of a cultivation sect, descends the mountain and enters the mortal world to complete his trial of the red dust. Newly arrived in the secular world with nothing to his name, he temporarily stays at a friend's residence, coincidentally becoming a co-renting roommate. Relying on ancient medical skills passed down for ages, he steps forward to save people, taking the initiative to decline the high monetary reward offered by the other party and choosing a humble security position to establish a solid foothold. After witnessing his miraculous medical techniques, a successful female entrepreneur sincerely invites him to head south together for cooperative development. Along the way, Lin Feiyu reveals his extraordinary abilities time and again to smoothly resolve all kinds of difficult problems, earning the respect of numerous seniors in the industry. Imbued with inherited skills, his wonderful urban trial of life thus begins.