The female protagonist was originally a diva. In order to help the male protagonist's career, she chose to retire from the music industry and live behind the scenes. Unexpectedly, after five years of secret marriage, the male protagonist gradually forgot the vow of love he once made, and mistook the second female lead for the "little bug" who had been with him day and night in childhood. Because of a small cold from the second female lead, the male protagonist left the female lead and his biological daughter halfway, causing her daughter to die of pneumonia. Only then did the female protagonist finally decide to let go. From then on, you are a mirage, and she will walk alone...