After humans discovered an ancient stargate at the edge of the galaxy, civilization fell into turmoil. Long Dandan and Xie Ziwei, as bottom-level reactor technicians, accidentally triggered the "Anselm Ghost" interstellar communication system. Xie Ziwei became the living key that can summon the energy of the star gate, attracting the pursuit of all forces. At the same time, the advanced civilization on the other side of the door is peeking at mankind, and the reactor is facing an overload crisis. Once it breaks out, the human territory will become a testing ground for new weapons of advanced civilization. Long Dandan and Xie Ziwei not only have to overcome their shortcomings as low-level technicians, but also deal with misunderstandings and pursuits from all parties. They must learn to control the cosmic strings and save humanity before the reactor is overloaded. Even if it succeeds, it may face a bitter victory as the system brings unknown new crises.