本片讲述三个以不同方式来到香港的内地人的故事，从租房到找工作，甚至是谈恋爱，他们都因文化不同而洋相百出。不过在这个充满活力的城市里，他们慢慢抹去乡愁，开始了一段又一段精彩的人生旅程。内地生陆南励志竞选学生会会长，一扫国际生不能当选的三大禁忌。Coco海选港剧女主角，一改往日女神形象。白薇则利用两地差异，算近市场天机。而万万想不到的是改变他们命运的竟是几个从未来回来的自己。　　在学校里，艾莉娜结识了许多和她一样善良的仙子们——内敛敏感的吉莉、英俊潇洒的林顿、外冷内热的沙宝思、神神叨叨的鲁米那、桀骜不驯的心玛等，共同学习生活的时光让他们彼此之间结下了深厚的信任和友谊，在巨大的威胁面前，他们能够团结起来，共同奋斗，粉碎卢维娜的阴谋吗？Compared with SYN cache method, SYN? Cookies technology does not need to allocate space at all when receiving a SYN. Because the most basic data that make up the connection state are encoded and compressed into the sequence number bits of SYN-ACK. For a legitimate connection, the server will receive an ACK message segment with a serial number (actually the serial number has been added by 1), then the basic TCB data will be regenerated, and a complete TCB will confirm that the data will be safely instantiated through decompression. This decompression can be successful even under severe attacks, because there is no storage load at all on the host side, only the load that calculates the encoded data into the ACK sequence number. The disadvantage is that not all TCB data can be added to the 32-bit sequence number segment, so some TCP options required for high performance cannot be encoded. Another problem is that such SYN-ACK message segments will not be forwarded (because forwarding requires complete state data).她满心的酸痛无法排解。