Gu Gu, a shy girl, meets Xing Xing, an extroverted basketball girl. Xing Xing is everything Gu Gu wants to be - have lots of friends and live a happy, carefree life with dreams. Gu Gu is organized; she lists out a long to-do list for herself. But how does that help her get closer to Xing Xing? Wait, maybe Xing Xing is trying to get closer to Gu Gu too...