Yan Luoning, a renowned diva excelling in film, television and music, was about to marry her boyfriend An Ran after five years of romance. However, a misunderstanding arose from forged photos fabricated by the second male lead, Situ Junjie. Heartbroken, An Ran joined a classified scientific research project and went abroad, barred from returning for five years. After uncovering the truth, Yan Luoning embarked on a long journey to win him back. Over those five years, she gave up her career and searched for him everywhere. When An Ran finally came back home, Yan Luoning learned that he already had a fiancée. In the end, she died after taking a knife strike for An Ran, leaving behind the regret of having passed through his world.
