Meng Linglan, as the general's mansion mistress, has always suffered threats and deception from her husband Chu Ye. Returning from an expedition, her husband brought back an exquisite merman, convinced it would turn into an peerless beauty. Meng Linglan simply refuses to let him get his wish. Disguising herself as a maid to approach the merman, exchanging genuine heart for genuine heart, ultimately, the merman fell deeply in love with her — on the night of the full moon, right before Chu Ye's eyes, the merman shattered his thoughts. Chu Ye was furious, but Meng Linglan used this confrontation to step by step provoke him into uttering his own crimes out of his own mouth. She opened restaurants and fought chambers of commerce, and on the road of building up from scratch, step by step unraveled the mystery of her birth mother's identity.