While in the process of finding the missing gun, they discovered that an ex-convict Grey Wolf who escaped from prison is possibly connected with the missing gun and even more surprisingly, Grey Wolf is actually having close communication and contact with students in Ying Ye.

Among the teenagers, they had to cooperate to find Officer Xia's missing gun and this led to the development of feelings between Jia Jiang and Xia Tian.  Fang Wei who has always liked Xian Tian now becomes the love rival of Jia Jiang.  This love triangle will have what impact on Jia Jiang and Fang Wei's friendship? Jia Jiang and Xian Tian who used to be as close as siblings, will their relationship change? Who stole Officer Xia's gun? And how are they going to find it? What will be discovered by the students afterwards?