'Go [...] to square one' means return to the starting point.

A flashback is a scene in which the film goes [...] to an earlier stage of the story.

A terrorist bomb was discovered outside the palace but it didn't go [...].

At this time of the year, the sun goes [...] at about six o'clock.

Don't go [...] without a raincoat.

He'll go [...] in history as the meaniest employer who ever lived.

He just went [...] reading the book as if nothing had happened.

I agreed to do it, so I'm going to go [...] with it.