help plz

hi guys.....i haven't been watching ksbkbt for like a couple of days so i was just wondering why tripti wants to kill ganga and, wut is the plan about that tulsi and sahil have decided to do which will save ganga and why are they making this plan. Finally, how did the virani family find out about asim if he is nandini's kid but if he isn't then who is he???

thank-you😊 -Jinath😆😃😛