Back in college, the trashy girl Gu Xixi was a hopeless romantic and a total lovesick fool when she met Zhang Yuze, a handsome, sunny boy. One morning, while they were out running, Gu Xixi stepped on Zhang Yuze. He went straight into a kiss with the ground and lost two front teeth, turning them into sworn enemies. They ended up dating anyway, but how could a girl like Xixi be content to hang all her hopes on just one tree? It wasn't until years later that Gu Xixi realized he had fallen in love with her long ago.
