Gao Feng, a young man of mixed Chinese and Western descent, returned to China with his teacher from Xizhou, stepped into the deep mansion of the Gao family in Jiangnan, and also entered the whirlpool of the Xia Dynasty's turbulent times. He is burdened with the mystery of his mother's death and the secret instructions of his mentor Uncle Geng. He faces his aunt Weng Bichen, who he has never met and has unpredictable thoughts, and his father Gao Wenrong who is guilty but determined to change. There are also undercurrents and temptations everywhere in the house. The confusion and stubbornness of the young man are quietly transformed within the fetters of the family.
As the supervisor of the Jiangnan Machinery Bureau, his father was in charge of the core force of the Xia Dynasty's mechanical revolution, and the mysterious past of his mentor Uncle Geng was closely connected to this steam machinery revolution. When the boiler of the Machinery Bureau suddenly and deliberately exploded, causing heavy casualties, the Free Protestant Army came to Ningbo Prefecture, and the unexpected appearance of a Weng family token led to the suspicion of conspiracy to the most unexpected person. The deep conspiracy of the house is intertwined with the crisis of the family and the country. The mystery of the leaked blueprints, the hidden traces of the mole, and the real backer behind the Protestant army are all layers of fog that need to be cleared away urgently.
From a carefree young man in Xizhou to the third young master of the Gao family who must shoulder the responsibility, Gao Feng grows up rapidly in the test of blood and fire. Standing side by side with his father, he faces the undercurrent of the deep house and the storm of the times. As a young man, he holds the torch of faith, explores the cause of his mother's death and the secrets of his mentor amidst the roar of machines and the shadow of swords, and protects the spark of change in the Jiangnan Machinery Bureau. In the majestic torrent of the Xia Dynasty, he follows the waves, marches towards the peak, and uses the power of a young man to support a corner of the future of his family and country.