Because of an encounter, they know each other; because of a promise, they know each other; because of a word of waiting, they accompany each other. Love is always so sudden, grasping each other's hearts tightly inadvertently. Tianyou's love is so deep, Danchen's love is so youthful, and Yifan's love is so passionate. Three people with very different personalities are connected because of three kinds of love. They overcame various setbacks in life and finally found their own excitement.