A signal connecting the beacon and the future, a fate that begins with encounter and ends with separation.
In 1938, the regiment leader Jiang Huaiye picked up a luminous "iron box" among the ruins, and a cold and anxious female voice came from inside.
In 2025, it's quiet late at night. History researcher Shen Yan's cell phone was inexplicably connected to an unknown number. Gunfire roared on the other end, and a man's breathing could be heard close to his ears.
One mobile phone, two time and space.
She became his "strategist behind the scenes", using the knowledge of the future to guide his life; he was her only real and tangible body temperature and heartbeat in the dust of history.
When the iron hooves of the Japanese army crushed the mountains and rivers, and a bright light tore apart time and space - Shen Yan, spanning eighty-seven years, truly stood in front of him. They fought side by side and became each other's only light in the darkest times.
However, the flow of history never stops for individuals. He was destined to sacrifice in a losing battle and use his life to buy her a glimmer of hope and return to the future.
"Jiang Huaiye, your name is only one line in the history books, but it is my whole life."
When she returned, carrying with her all his memories and the flames of an era, she discovered that that time travel at all costs,
