He was falsely accused of collaborating with the enemy and sent north in a prison car. He was robbed and killed by assassins and bandits while being escorted. He suffered from chronic "cartilage dispersion" and only had three months left to live.
He once killed the enemy in a bloody battle at the northern city wall, but was secretly exiled by the Pei family, a powerful figure in the capital, who colluded with the barbarian Iron Harrier tribe.
The old military doctor Sun Bo recognized him as General Zhenbei and brought tragic news: 30,000 barbarian troops had moved south, and Zhenbei City was in danger.
Shen Zheng fought his way out of the siege, seized the barbarian scouting order, took the exiled blacksmith Zhang Tiezhu and Sun Bo, and headed north day and night, regardless of the hidden poison.
He wanted to become a general again from a prisoner before the barbarians captured Zhenbei City.
But the Pei family in the capital and the moles lurking in the barbarian army had already set up a dragnet, waiting for him to crash into it.