Sanmao drifts through 1930s Shanghai as a penniless orphan, scraping together whatever survival he can manage on the city's unforgiving streets. When a wealthy industrialist named Wu Zifu suddenly offers him and his friend Xiao Laizi unexpected charity, Sanmao's luck seems to shift. But fortune in this world carries hidden costs. Soon after, Sanmao collapses into a mysterious illness that no one can explain, and his recovery becomes uncertain. Reporter Hou Yiwen catches wind of the situation and begins pulling threads, sensing something darker at work beneath the surface of Wu Zifu's generosity. What started as a stroke of good luck transforms into a tangled puzzle where kindness and conspiracy intertwine. Comedy threads through the misadventures and absurdities of street life, but the underlying mystery deepens as Hou Yiwen digs closer to the truth. This blend of humor and intrigue plays out against the backdrop of a Shanghai where nothing is quite what it seems, and every opportunity demands scrutiny.