Mai Chenghuan, a post-95 girl born into an ordinary family in Shanghai, agrees to marry her boyfriend, Xin Jialiang, under her mother’s urging. However, the economic gap between them creates an imbalance in their relationship, ultimately leading to its end. Mai Chenghuan then gains her grandmother's approval and is entrusted with the heavy responsibility of managing a hotel. Through cooperation, Mai Chenghuan and the professional hotel manager Yao Zhiming become working partners and go hand in hand. Mai Chenghuan transitions from being under her family's control to achieving self-fulfillment, forging her own path.
In the early days of the founding of the People's Republic of China in 1949, New China was faced with "internal and external troubles". Since the outbreak of the Korean Civil War, the U.S. military has repeatedly provoked the border between China and North Korea, and civilians have been brutally bombed. In order to maintain the hard-won peace and long-term stability for generations, in October 1950, the Chinese People's Volunteers entered North Korea, and the "Resist US Aid Korea" war kicked off.
Su Jiu'er, a female constable of the Qian country who is scared of cold, and Han Zheng, the warm young master of the Qi clan, meet because of a strange murder case concerning the relationship between the two clans and form a partnership of two people with a huge warmth difference. They work together to find the truth and dissolve the crisis their families are facing.