A modern female college student accidentally time-travels, reduced to a mocked young lady named An Yan in an ancient building. She takes on the predecessor's commission, protecting relatives and friends, and saving stranded companions. Without peerless beauty, An Yan opens her mind wide, bringing river snail rice noodles into the capital to start a food business. A bowl of food becomes a massive hit, inadvertently involving her in the right-and-wrong entanglements of multiple figures in the capital. An Yan, who only wants to make money, relies on modern wisdom to run a business on one hand while resolving wave after wave of hilarious crises, protecting those around her, and carving out her own path to survival.