In 2007, there was an unusual disturbance in Earth's basic science, and the scientific community was in a state of turmoil and fear. Bizarrely suicidal scientists, near-miraculous countdowns, scientific boundaries acting in secrecy, and the mysterious and unpredictable game of "Three Bodies". Nano-scientist Wang Miao (Zhang Luyi) is brought to the Joint Warfare Centre by police officer Shi Qiang (Yu Hewei), who infiltrates the organisation known as Science Boundary to assist in the investigation. In the mist, Wang Miao comes into contact with an organisation called ETO and discovers that the commander-in-chief is Ye Wenjie, the mother of Yang Dong, a scientist who committed suicide. As the ETO and the Combat Centre continue to play back and forth, Wang Miao and Shi Qiang gradually determine that the world in the game "Three Bodies" really exists. And the origin of all the events is a desperate life-and-death competition between two civilisations for survival space. With the joint efforts of the Joint Warfare Centre and the scientists, Wang Miao, Shi Qiang and the rest of the team are determined and hopeful, and they continue to prepare for the fight against the invading Trisolaran in the future.