There are N parallel universes, so there are N Johns, N ABBYs, N stories about them, and N time travels. The film intercepts 2 parallel universes, if you add the end of the 3 minutes, it will be 3 times.
Every parallel universe, every time travel, every story of John and ABBY, is similar but not. This is the whole story.
If you can crack the ins and outs of the novel written by ABBY, you can break the endless loop of the film. At that time, this film was a super 5-star film.
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