After years abroad, Zhu Yun returns to her hometown filled with memories and old friends. Meanwhile, Li Xun tries to adapt to his post-prison life.

Zhu Yun confronts Li Xun about his absence from class. Soon after, a computer virus from Li Xun causes chaos in his department.

A vengeful act from Zhang Xiaobei threatens Zhu Yun's future. Later, Li Xun decides to sacrifice their project to protect Zhu Yun.