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.
Geng Geng had been an ordinary girl before her entry to the best high school in the province by chance. She doesn't like her life there until she meets Yu Huai, her seatmate - their names make up the word "Geng geng yu huai", meaning "Unforgettable memories". They don't like each other at the beginning, but soon they start to understand each other.
Basada en una obra clásica china acerca de un huérfano que vengará la muerte de su familia. La historia gira en torno a un médico que salva Zhao Wu, el único miembro superviviente de una familia masacrada, sacrificando a su propio hijo. Zhao, con ayuda del doctor Cheng Ying, buscará vengarse de la familia rival y de los asesinos cuando crezca. La obra original fue publicada por primera vez en la dinastía Yuan (1271-1368), pero posteriormente fue adaptada por el escritor francés Voltaire en 1755 como El huérfano de la China.