"Will I see her again?" "I don't think so." Those are the last words Jennie Kim hears before the masked abductor knocks her unconscious then Jennie woke up in an entirely different world. Suddenly, her house is not her house, she's not married to Lisa, and somehow, her career from being a physics professor suddenly turns into a successful award winning physicist. Is it this world or the other that's the dream? And even if the home she remembers is real, how can Jennie possibly make it back to the woman she loves? The answers lie in a journey more wondrous and horrifying explanations than anything she could've imagined - one that will force her to confront the darkest parts of herself even as she battles a terrifying, seemingly unbeatable foe: herself.

Jennie and Lisa don't ask why this is happening to them. They are beautiful together, and the universe, with everything that is miraculous and impossible about it, couldn't help but break the rules for them if only to see another beautiful thing over and over again.

Jennie and Lisa are connected. They meet every time, fall in love every time. They are meant to be together, but destiny doesn't seem to be on their side. Jisoo and Chaeyoung step in. Their task is to make it work.

Lisa Manoban, a foreign exchange student in South Korea, finds her world, everything she knows and believes tested to their limits, along with her sanity when one day she enters a hidden room on her campus and walks into an American high school in 1964. There, she meets a student called Jennie Kim who makes Lisa's life even more difficult. Is Lisa crazy or has she really found a door that allows her to travel through time and across the world?

"And the third reason?" Lisa asked as she rested her hands on Jennie's hips. Jennie laughed, her shoulders were shaking. The sound of it echoed across Lisa's place, making the two cats on the top of the stairs stirred and craned their necks to get a better view of a laughing Jennie. It was a beautiful sight. "Do you want me to show it to you or would you rather I'll tell you a story?" Jennie asked playfully. Lisa contemplated for a moment. She was absentmindedly chewing the walls of her mouth. "How about we make a deal?" she asked. "Tell me a story, and if it's a good enough story, I will show you something. What say you, Jennie Kim?" Jennie raised a brow and asked, "Why do I feel like you're patronizing me the way you're saying my name right now?" "So, it's not a deal then?" Lisa replied, looking smug. But a shadow of a smirk was hinting on the corner of her mouth. "Fine. Deal," Jennie said.