Season 1

Soo Jin meets Park Hae Jin, her manager at work. He is angry at Soo Jin for using her phone at work and confiscates it. He then asks her to meet him after work. When she goes, Hae Jin asks her if she has anything scheduled after work or a boyfriend, which she answers as neither. He then asks her to overwork with him, but they only eat dinner. Hae Jin leaves and Soo Jin tries to clean the office but finds photos of her. Those same pictures were in an envelope placed in her locker. Soo Jin is now scared and tried to run away. Someone starts following her and she suddenly meets a creepy perverted man in the elevator. He tells her that he was the one who took her pictures and starts stripping while taking her pictures. Hae Jin saves her and tells her he was watching over her after finding the photos. He then asks her to be his girlfriend. However, before they kiss, she is back in time. Her old boss then delivers an envelope to her. (Source: MyDramaList)

While walking is a dark alleyway, Soo Jin is pulled by Ji Chang Wook, who is looking for the flash memory. He apologizes for getting her involved, but suddenly, a gun is raised to his head by a gang member, who claims that Chang Wook is a traitor and is actually a secret agent. Soo Jin is shocked to hear that she is also a secret agent. When the gang members attack them, Soo Jin helps Chang Wook and they escape to the safe house. There, Soo Jin treats Chang Wook's gunshot wound and asks him why he is doing this job. He tells her that it is his duty to protect and that he was her team leader at the agency back then. He also tells her that he fired her because he has feelings for her. He tries to leave but she follows him and asks him not to, and before he kisses her, she is back in time. (Source: MyDramaList)

Soo Jin is shocked when she finds she can speak and understand Chinese fluently while helping customers at work. This in turn makes her curious about who she'll meet next -- but she doesn't expect the handsome Kai to be someone she had seemingly tutored in the language and who also has romantic feelings towards her. (Source: MyDramaList)

Soo Jin spends time with her boyfriend Ok Taecyeon, who is a wealthy heir and absolutely head over heels for her. So much so, that he is willing to give up everything in order to be with her. (Source: MyDramaList)

Soo Jin finds that she has a role in an TV Commercial being shot at her workplace, but she didn't expect to be working alongside Lee Jong Suk. In the beginning she is far too nervous and continues to upset the director, but luckily Jong Suk is there to help calm her nerves. (Source: MyDramaList)

Soo Jin has a difficult time choosing which kiss to go back to. In the meantime she meets Lee Min Ho, an Adventure writer. (Source: MyDramaList)