So basically our ML is a famous singer who travels 20 years into the future , and learns that he actually disappeared in 1994. You would think the plot is centered around him trying to figure out why he disappeared and how to get back , but the drama strays away from that and shifts into a show about 4 friends trying to figure out their dreams, with an ounce of family relationships being touched upon as well. We also get a glance at how the life of a trainee is, and what it's like to be an idol. A lot of people rate the drama low because of the major change in plot, but personally I loved it, I thought the romance between the leads were cute, and I liked a majority of the cast, especially Eun Woo as MJ, the show had the right balance of comedy and romance, with a great OST. There were some parts of the show that I felt was forced or redundant, but outside of that it is a nice enjoyable watch, and if you're a fan of YSY this is must watch.