Yeolhansi

In a not-too-distant future, a team of researchers at a deep-sea laboratory has achieved a groundbreaking breakthrough by inventing a functioning time machine. The head researcher, Woo-seok, is under immense financial pressure, and a lucrative deal with a powerful corporation hinges on the successful completion of a test flight. Despite the risks, Woo-seok and his colleague and lover, Young-eun, embark on the perilous journey, traveling to 11 A.M. the next day. However, upon arrival, they find the laboratory on the brink of disaster, leaving them to ponder the catastrophic events that may have unfolded in the 24 hours since their departure.