Years ago, capital official Gu Yunzhou presided over a case that brought ruin upon the entire Wen family of Jiangnan. The family's young daughter, Wen Qideng, concealed her identity and settled in an ancient town, tending a shop that sold flower lanterns. Three years later, Gu resigned from office and traveled south. A revolving lantern marked 'Not for Sale' stopped him at the shop's entrance. He did not recognize the young woman before him, but she recognized him as the very figure in blue robes she had seen in court years before. With a bowl of hot porridge and a humble craft, he found a way to stay. Amid the shifting shadows of revolving lanterns, he uncovered the truth behind the wrongful verdict and sought to atone for his mistaken judgment with the rest of his life. As the lanterns burned bright and life endured, he finally repaid what he owed her with a lifetime of devotion.