it's about
Il s'agit de l'une des nôtres.
She's one of ours.
This is my mother.
Il est convaincu qu'il s'agit de curry.
He is convinced that it’s curry.
This is your son.
It is the king's agony.
— L'Histoire personnelle de David Copperfield (2019)
S'il s'agit de terroristes, quelles sont leurs exigences ?
If they are terrorists, what are their demands?
— Piège de cristal (1988)
Oh mon Dieu, il s'agit de ma maison !
Oh my God, it's my house!
It's about us.