Modern special forces Yang Zhaohe was reborn as a high school student in 1954. With his future technology system and keen insight, he assisted Public Security Section Chief Zhou Guodong to gradually dismantle the huge enemy agent network codenamed "Beigui". From discovering the secret writing potion, cracking the printing point, to tracking down core members such as "Venomous Snake", "Sparrow" and "Golden Eagle", Yang Zhaohe went through more than a hundred confrontations such as dock street fighting, blasting of machinery plants, and bomb disposal on the island in the middle of the lake in the capital. Finally, he uncovered the "Thunder" plan of the enemy leader Chen Wenyuan to plan simultaneous explosions in thirty-seven cities. He completed the ultimate showdown in key battlefields such as the underground chamber of the Temple of Supreme Harmony, the abandoned lighthouse, and the Tianjin Port freighter, and prevented the devastating attack.
