Yue Ran, Ning Jiajia, Su Shan and Luo Fei are graduates of a hotel management course. They pass through various tough selections to enter the international hotel chain BYT as interns. However, they do not have much work motivation. Some wants to heal their pain from a previous relationship, while some want to take this as an opportunity to meet rich people.

A gambler is targeted for murder during the wedding of his daughter to his protege.

In his journey of study, young Song Ci, a forensic medical scientist in the Song Dynasty, becomes entangled in a murder case. Still inexperienced, he faces the peril of making a critical mistake. A mysterious traveler comes to his aid, unraveling vital clues hidden on a red oil paper umbrella that prove instrumental in cracking the case. Inspired by his own shortcomings, Song Ci doggedly pursues the truth, forging a legendary path as he unravels the mystery.