Now i want this in all time travel dramas.

Thank you so much for this breakdown. (My question is going to be a little Spoilery FYI) . I'm having a hard time figuring out what memories Im Sol has in each timeline. But for older Im Sol, the second time she goes back to the past, she magically keeps all of young Im Sol's memories between her return and when she first went back in time. But I can't tell if it's the same when she goes forward. I'm on ep 9 - so the third future timeline - and I can't figure out how much she knows about the past. I thought originally nothing (so a blank of a whole 15 years) because she doesn't remember the second run-in in 2009She's going through the evidence from the 2009 kidnapping, and there's an image from the police report where she sees something (I assume it was the watch, but all I could make out was what looked like a CD case), and it makes her think her young self took the watch from the crime scene. Why would her young self have taken the watch?  What I thought of was that she was in love with Sun Jae, but she couldn't have had older Im Sol's memories, so it couldn't have been out of love for Sun Jae, right? Or maybe she had fallen in love with Sun Jae after the accident, even though she didn't know who he was?

Now it’s the third time back in the past and she doesn’t seem to remember things that she should know if she’d kept young Im Sol’s memories - like that they have a first year’s retreat coming up.

I am probably just confusing myself, but... that's why I'm asking I guess.

@kadie890 

Any overly traumatic event, like one of the kidnappings is not remembered by Im Sol in detail. It's so traumatic that she only has a fuzzy/vague memory. Also because she is having to sort through multiple years of slightly different memories, it's hard for her to know anything until the final timeline is set.  So the memory thing is a bit more fluid until there are no more resets. I don't know exactly how she got the watch again. I think I just assumed that Sun Jae gave it to her or (insert spoiler about another character) being a little magical and getting it to her. 

So think of the past 15ish years of you life and try and remember the details of any given day. Now try and remember the dreams you had for the last 15 years and pick out which is which. She doesn't know what she remembers until she is triggered by something and "goes looking" in her overloaded memory.  Her clearest memory is from the OG timeline and when she traveled to the past. Anything that happened between those times after coming back to present day is going to be muddled or like trying to remember a dream until she focuses in.