网络写手陈石与好友王涛相约一起去银川看望自己正在拍戏的女友瑶瑶，两人在阴差阳错之下撞见瑶瑶出轨，被现实打击而悲痛万分的陈石亦真亦幻地遁入自己的小说中。陈石成为了他梦想中的大侠，而王涛却成了权倾朝野的反派魏公公。陈石完成了从胆小怕事到舍身取义的蜕变，而王涛也因过度迷恋权力而丢失了自己的本性。到最后，两人始终没有逃过“宿命”的捉弄，纷纷倒在了时代的车轮之下。

司徒末（邢菲 饰）毕业在即，从小便习惯服从安排的她对前途迷茫懵懂，随波逐流地尝试各种安排，总是鼓不起勇气为自己做出选择。因新老校区并校，物理系的高材生顾未易（林一 饰）闯入司徒末的生活，平淡无奇的生活掀起了啼笑皆非的浪花。几次三番的交战让司徒末和顾未易这对欢喜冤家逐渐走进对方的心底，更是误打误撞地成为合租盟友。在相处过程中，两人逐渐放下偏见，在对方的鼓励和帮助下，找到人生和事业上的新方向，也收获爱情。两人共同经历了毕业、求职、工作，才明白，原来最温暖的小时光，就是走对的路、与对的人做对的事。
本片根据赵乾乾同名小说改编。

Rong, living in a small town in the south of China, is a pedicure therapist who has never gotten married. She has a brother named Xiaodong , who is 14 years younger. Xiaodong is almost 18 years old, instead of working he plays video games all day long, but after going through a series of things he finally becomes independent. And Seeing this, Rong returned to her hometown in the northeast of China, and went to the police station, confessing that she killed a person 19 years ago. However,the following development of the matter is going to be out of Rong's expectation.