Apparently this is based on the K drama with the same title. I have seen said drama but years ago and all I remember are the candles and the Himalayas. But I remember liking it (though when time travel is concerned, i am not picky: I adore the concept!).

A man discovers a bunch of candles that can take him back ten years so he uses them in order to save his girlfriend's life. This is the basic plot: but it is eventually really complicated, with many changes accomplished in the past which radically alter the present.

I have to give it to the writers: every time I'd see a plot hole and say "Aha! Gotcha!" , they'd find a perfectly logical explanation in accordance with the overall plot. It is practically foolproof if, of course, you accept the original ridiculous premise of time travel inducing magical candles! There is also the advantage they had going with the short format: they did not have too much time to ruin the drama with unnecessary subplots and complications.

Production value is excellent, the pacing perfect, the acting solid, music nice.

Since it is a c drama and since they are not allowed to do time travel themed series, there is an epilogue after the credits of the last episode which explains, using some incomprehensible mumbo jumbo, that the whole thing was just a coma dream. The full version (3h50 on youtube) does not feature this epilogue so you will be left wanting answers since the story is incomplete (or rather left on a cliffhanger!).

Definitely one of the best short c dramas!