another story

(quite) another ˈstory

,

a (quite) different ˈstory


1 very different from what has just been said: Her English is excellent, but her French is another story.
2 used when you are talking about one thing and then mention another thing, which you are not going to talk about on that occasion: I once met Paul McCartney, but that’s another story. I’ll tell you about that one day.
See also: another, story