"It's time for Wen Mo's Hundred Years War to end!" To achieve this goal, the Wen Mo Empire's Princess Yichen transformed into a student girl, Chu Xue, and entered the top espionage school of the Monan Empire. She began a thrilling life of espionage and counter-espionage... The emotional mist between her childhood sweetheart Xin Ming, the love and hatred between her cold senior student Xiao Ran, and the misunderstanding and entanglement between her and her best friend Wei Xin... In the end, in order for the civilians to no longer be displaced, and to stop the endless killings, the princess chose to betray her country. Xiao Ran, who realized later, finally understood his true feelings at the moment when he died to save Yichen. Xiao Ran left, and Wen Mo left the next morning. Xin Ming, who never left her, also left this troubled world with her...