马込光代是一名服装店营业员，她和妹妹一起住在一个小公寓里，妹妹和男友的亲热更让光代倍感孤独。在某个交友网站，她和清水祐一相识。清水祐一是个在工地打工的农村小伙，从小被母亲抛弃，被奶奶一手带大。两颗孤独的灵魂就这样相恋。殊不知清水祐一身负命案，他误杀了自己曾经的女友石桥佳乃。石桥佳乃是个爱慕虚荣的保险公司推销员，她在一个偶然机会认识了名叫増尾圭吾的高富帅，甚至在与男友约会途中也因遇到高富帅而抛下男友。不料却被高富帅踢下了车，这一切被跟在后面的清水祐一看在眼里。石桥佳乃恼羞成怒要去诬告清水祐一，却导致自己被清水祐一误杀。得知清水祐一是个杀人犯后，沉浸在爱河中的马込光代不光毫不在意，还阻止清水祐一去自首，二人一起踏上了逃亡之路。他们在灯塔下度过了一段清苦而甜蜜的时光。然而等待他们的是…

Magume Mitsuyo is a salesperson in a clothing store. She lives with her sister in a small apartment. Lonely. She met Yuichi Shimizu on a certain dating site. Shimizu Yuichi is a rural boy who works on a construction site. He was abandoned by his mother since he was a child and brought up by his grandmother. Two lonely souls fell in love like this. Little did he know that Shimizu Youyi was responsible for a murder case, and he mistakenly killed his former girlfriend Yoshino Ishibashi. Shiqiao Jia is a vain insurance salesman. She met a tall, rich and handsome man named Masuo Keigo by chance. Unexpectedly, he was kicked out of the car by Gao Fushuai, all this was seen by Shimizu Yu who followed behind. Ishibashi Yoshino became angry and wanted to falsely accuse Shimizu Yuichi, but he was killed by Shimizu Yuichi by mistake. After learning that Shimizu Yuichi was a murderer, Mitsuyo Magome, who was immersed in love, not only didn't care, but also prevented Shimizu Yuichi from surrendering himself, and the two embarked on the road to escape together. They spent a bitter and sweet time under the lighthouse. But what awaits them is..