Tang Cai and Feng Le are good sisters who grew up together. They have very different personalities. One is quiet and studious, the other is playful and rebellious. But precisely because of these polar opposite personalities, the two complement each other and become each other's best friends.
Unexpectedly, the day before Tang Cai's wedding, she discovered that Feng Le had been in love with her boyfriend for many years, and because she misheard the dialogue between Feng Le and her boyfriend, she misunderstood and became a runaway bride, and began to 'have fun' and change herself...