Tristan Reyes, a 29 years old office worker, confessed to his co-worker Mari Chan after 4 years of friendship, changing their relationship. One night however, he was bothered during their conversation after his girlfriend stopped talking about her high school life. "I shouldn't press her any longer." as he lights his cigarette after buying supplies from the convenience store. Following the events from before, he saved a child from the speeding vehicle, in which Tristan found himself blinded towards the flashing light. After being woken from the nap by his bestfriend, he noticed that not only they both wore their old high school uniforms, but also went back in time, exactly 14 years ago! Will he be able to know why his girlfriend in the future don't want to talk about the past? Should Tristan fix the timeline or will he let it flow to avoid the consequences? This is the story of a youthful love story about being able to save his loved one from the fated disaster which she may face in the near future.