Afin d’anéantir la menace d’Aliens capable de posséder les corps humains, un gardien est envoyé du futur pour traquer ces envahisseurs. Mais lorsque Séoul est attaqué, ce protecteur comprend qu'il ne s’en sortira pas seul. Des siècles plus tôt, une mystérieuse élue parcourt le pays à la recherche de l'alien originel. Des quêtes parallèles de ces voyageurs du temps dépendra le salut de l'humanité.

Ean has a critical missionto return to the future to save everyone. However, she becomes trapped in the distant past while trying to prevent the escape of alien prisoners who are locked upin the bodies of humans. Meanwhile, Muruk, who helps Ean escape various predicaments, is unnerved when he begins sensing the presence of a strange being in his body. Traveling through the centuries, they are trying to prevent the explosion of the haava.

In Kyoto, Mayuko (Haruka Ayase) stands at a crossroad in her life. She's thinking about marriage with her boyfriend Kyoichi (Hiroyuki Hirayama). By an accidental opportunity, Mayuko stays at Honnouji Hotel. There, she meets historical figure Nobunaga Oda (Shinichi Tsutsumi) who is attempting to unify Japan.

Students, including Aoi Nishino, take part in class and sports activity at a prestigious high school. Aoi Nishino is a member of the school's archery club. He practices archery studiously and doesn't socialize much with the other students. His childhood friend Haruka Seno is also a member of the archery club, but she worries about Aoi Nishino. One day, thunder strikes the school grounds. After that, the ordinary lives of the students changes drastically. Many samurai descend on the school grounds. It appears that the entire school has traveled back in time to the Sengoku period. Making things worse, they realize that they are in the time right before the Battle of Okehazama takes place.

'Lee Seon' dreamed of becoming a wise mother and wife, leaving her unfortunate past behind.

But there was no proper man in this world! Thinking that starting over was the only way out, she dreams of a new love by faking suicide. Absurdly, 'Lee Seon' faced a real death! The moment your breath stops, the seven-day time slip door opens to look back on past relationships... Will her love be rewarded?

Hana leads a boring life between work and hobby, until one day she suddenly travels through time to ancient Edo, before the Western powers had opened the country. A fan of historical romances, she imagines herself on a film set and fancies the historical Sakamoto Ryōma, a hero of the Bakumatsu period.