Abhi, I re-watched the precap again..and am now forced to change my decision..I think this is what will happen: OVI is kidnapped first by the three men (so maybe the unknown woman shown today was Ovi itself), but she would, somehow manage to escape.
And now coming to the Precap shown today. Vishnu says that "she" will tell her dad about them, and before that he has to find a "new plan" - that is when PURVI will be kidnapped. So in effect, Purvi will be kidnapped soon (monday or tuesday) - Soham will know that Purvi called Manav "Baba" so she is his other daughter, and also, maybe he now sees Purvi with Arjun, so he will think this new plan will hit two targets with one stone - he can ask money from Manav/keep his mouth shut and also take revenge on Arjun.
What do you think?