another story

Noun

A radically different interpretation of a situation. / A different situation entirely.

Japanese Meaning

全く別の話 / 完全に異なる状況 / 全然違う事態

They blamed him for the mistake, but knowing he was covering for a sick colleague is another story.

彼らは彼をミスの責任にしたが、彼が病気の同僚の代わりをしていたと分かれば、それはまったく別の解釈だ。

Sense（1）

A radically different interpretation of a situation.

Sense（2）

A different situation entirely.

Of course, if the Redskins draft you to play for them, then that's another story.