I don't even know where to start my review.. I'm disappointed with too many things specially the end. I wasted 16 hrs of my life to watch this bad drama. it's full of nonsense events.

let me talk about few things then I will write about the end.

First of all, they but rules in this drama, then they act opposite of it. For example , when the time gate is closed, all time travelers will disappear, so what happened when it was actually closed? Alice disappeared, but Yoon Tae Yi didn't!! ..why?? not only that, but she's the only one who remember what happened..again, why?????

Park Jin Gyum stays with his mother as high school student after he finally succeeded in preventing her death. So, what happens when became an adult in 2020..he passed by Yoon Tae Yi , but didn't recognize her..she looks like her mother, but didn't react when he saw a person who looks like his mother????

About the ending, why the writers stole the end from the famous German series (Dark)?? the old and bad Park Jin Gyum is the mastermind who prepared for all these events to happen..why he became bad to kill his mother? we don't know..it's like when Jonas "in the German series "DARK" became bad old Adam who planned for everything including killing his love "Martha"..etc

I can't even describe how much I'm disappointed :(