Marco (Mario Casas) is a young businessman who manages one of the most successful technological companies in the world, ALVA, which has just launched its latest prototype into the market - CYCLONE, an electric car propelled by turbines that turn wind into energy. His friend and classmate Diego works with him, along with the latter's wife, Bárbara, the efficient marketing manager of the company. Eva, a young, ambitious engineer who has a lot to hide, also joins the team, and she will disrupt the balance at work, both emotionally and professionally, between the two business partners. In spite of being a popular guy, Marco, unlike Diego, doesn't have an exciting social life. He is a solitary man, and no one has access to the intimacy of his soul, apart from his psychologist, SARA, on whom he is emotionally dependent. Marco is haunted by a huge number of ghosts from his past and, although he tries hard to scare them away, he only finds comfort in sport and in frequenting a private club. People go there just to get pleasure and give free reign to their wildest erotic fantasies, without fear of falling in love, as everyone has to wear a mask to hide their faces. But everything changes when Marco meets Carol, the new educational psychologist who looks after his brother José, an 18-year-old boy with problems of autism, with whom he has a difficult relationship. With her, he will also meet his worst enemy - himself. Thanks to her, he will discover that it is never too late to love, even if it brings some pain along with it.
17世纪初，不明飞行物出现在朝鲜上空，由此开启了一段绵亘四百年的传奇因缘。时间来到当代，当年来到地球的外星人以大学教授都敏俊（金秀贤 饰）的身份生活在韩国的普通人中间。还有三个月一枚彗星即将接近地球，届时这个在地球上滞留了四百年的外星人将得以返回故土。只不过，在此之前他总会想起初来之时遇见的少女徐宜花（金贤秀 饰），也渴望再见到12年前救过的一个小女孩。敏俊与颇受人诟病的国民偶像千颂伊（全智贤 饰）比邻而居，而且后者又是他所在大学的学生。最初的交流并不顺畅，但敏俊很快发现这个女孩和他竟有着如此深的渊源。 总经千百年，他们的缘分从未断过。在几度轮回过后，男与女再度相逢……
一个收藏各类奇妙物件的博物馆，有可以将贪欲装起来的行李箱，能实现愿望的水晶球，还有将人封印在某一天的时钟。惊喜感动，高能悬疑，反转不断。
