The agent of the Space Labor Bureau (Ethan Hawke) was once ordered to return to the 1970s to stop the sabotage activities of the terrorist "flash bomber" who caused great damage to the city. Unexpectedly, his mission failed. After a long recovery, he embarked on the journey again, vowing to bring the flash bomber to justice. This time he was in the market as a bartender, and one day he accidentally met a writer named "unmarried mother" (Sarah Snook). The writer told him about his incredible life. The writer was an orphan named Jane. After failing to apply for a space company, she fell in love briefly with a weird personality and gave birth to a baby girl. As a result, her life changed dramatically. The agent planned to take the "unmarried mother" to kill the unfaithful man, but the truth was not that simple...