The story tells that the heroine is a mercenary. After completing a mission, she learned about the death of her twin sister and rushed back to China. She met her sister's suitor Zhao Jingnan. After the two accidentally met, the hero looked for the shadow of the twin sister in the heroine. Then they met the male protagonist Zhou Yicheng who was half a boss during a mission. The three of them discovered that their sister's death was unusual and related to an illegal arms group. Together they explored the conspiracy behind it... And finally opened their hearts...
Purpose: Adherence to justice and responsibility for mission