is there any option to skip the plot to the point where I stopped, if I didn't save it?
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No, game doesn't have skips, not sure if Arc wants to add them either.
If you're on the same machine and didn't lose your saves, check the A, page in the saves, that's for autosaves and the game autosaves every time you go to sleep.
If not, well, your only option would be to get someone else's savefile.