Even the ever-charismatic Lee Je Hoon couldn't save this mess of a show. His grounded acting style was wasted on weak material. This show didn't know whether it wanted to be a cheesy romance or an exciting take-charge adventure, and in the end, it failed at both.

Lee Je Hoon's time travelling So Joon is introduced as a closed off character with a tragic past, but he transforms much too quickly and is mostly good from the start, so there is very little growth. And Shin Min Ah's Ma Rin is written as helpless, ignorant, and rather blank until late in the show, which is both annoying and cringey. The characters get stuck talking in circles or hiding the same secrets from each other for multiple episodes while the exciting elements of the plot are underutilized. Furthermore, the characters' back stories are not fleshed out so we don't care much about what happens to them. The leads both come across as one-dimensional.

The most fun I had was watching Kang Gi Doong in his supporting role as So Joon's best friend and ally. I feel he carried the majority of the show's emotional weight. On the other hand, the antagonists were annoying and angsty, which made it hard to buy in to the major conflicts they created.

Right away, I was turned off by how the main relationship begins. It is so unbelievable, strange, and cheesy that you wonder whether it was taken from a different drama. In the end, I believe the root of the problem is the show's poor writing and direction. The scenes showing the characters' reactions and aftermath of big, dramatic events is frequently cut short or so poorly done that we don't get to see how these events help the characters develop, nor do we even have the chance to emote or find connections with them. The second half was a bit better after time travel became the focus and the entire show switched gears, but it was too little too late.