Only those with unnaturally blue eyes are able to operate the ancient technology left behind by their predecessors. Jongin is one of them, and he can't stand the fact that someone like Chanyeol can keep up with him so effortlessly. After years of rivalry, things take a turn when he finds out Chanyeol's biggest secret...

Yixing and Jongdae are special agents, and when one of them gets severely injured on a job, it could test their loyalty and also willingness to continue.

Kan knew that the mission would end and the Time Travelers would return. He didn't realize how agonizing it would be to wait.