倒霉蛋叶可乐经营父亲留下来的茶铺,无意中卷入迷香大案,靠着超人嗅觉当上了巡城卫;嫌疑很快锁定到私自跑出宫的柒公主身上,叶可乐对其一见钟情,为了排除爱人嫌疑,叶可乐用灵敏的鼻子再次寻找线索,根据柒公主指引和帮助,竟意外揭开了一个惊天秘密...
Ye Ke Le, an unlucky man, runs his father's tea shop in Wanle City. He ends up involved in a mysterious murder linked to an intriguing perfume. Unintentionally, he becomes a spy, helping with the investigation as a patrolman. Bizarre events and complicated clues emerge, leading him to meet Ruo Ye, a young Japanese woman. Based on Japanese spice clues, he deduces Princess Qi's involvement. Ye Ke Le falls in love with the princess at first sight. To clear her name and find her, he uses his keen sense of smell to track down clues. The clues lead to Jiu Ruo Shui and Lan Qing Yue and, with Ruo Ye's help, reveal that the mastermind behind it all is a member of the royal palace.