16岁的Rae Earl（莎朗·鲁妮 Sharon Rooney 饰）为人风趣，喜欢音乐。基本和普通这个年纪的女孩并没有什么不同。当然，除了，有那么一点胖。因为这一点，她常常给同学叫做“胖妹”，也因为这点，她有时很害怕和外界接触，总是独自呆在家里。有时还会因为 这个原因和独自抚养她长大的妈妈吵架。但这个胖姑娘还是和普通女孩一样，看到帅哥会犯花痴，遇到陌生人会有那么些尴尬。　　最重要的问题是，Sharon刚从一个特殊的地方回家——精神病院。但她答应了自己和妈妈一切都会好起来，她要勇敢的对面生活的爱情。究竟这个胖妹会带来一段如何经常的生活日记呢？

In the year 2961, the time is after humanity and nature has recovered the land. A hunter named Cygnus is called to rise above his duty. He provides for Last Arc, a once nomadic band of survivors in need of food and water that is now growing scarce. The answer must be found before a group of outlandish Heretics descend upon them. Cygnus must voyage across the treacherous landscape to defend his people. Sent by Nova, the matriarch of the band, she acts based on her vision for Cygnus to find a seed of hope. The future of Last Arc is for him to discover, Cygnus ventures into a hostile landscape in search of an answer for his people. On this journey of encountering many traps and dangers, Cygnus discovers what has been hunting him is his identity.