In Shanghai in 1925, a progressive female student Su Manqing was hunted down for promoting patriotism and hid in the mansion of warlord Lu Chengze. Lu Chengze looked cold on the surface, but secretly supported the revolution and was moved by Su Manqing's passion. The two supported each other in troubled times. Su Manqing used her identity to pass on information, while Lu Chengze protected her. However, they faced a choice due to their different stances, and finally joined the cause of saving the nation.
