Shagun will try to fight the custody of Ruhi.

Unknowingly Ishita will be helping Shagun to get back Ruhi from her estranged husband Raman
Ashok will be instigating both the Mehlaa morcha and Shagun to take back Ruhii
Ishita once again will explain Ruhi to go with Shagun as she's her mom.
Ruhi will be missing Ishita at Shagun place and the same for Ishita.
Amidst all these happenings Raman will be these standing and watching all quietly.
Raman will make sure that this time he will not let Shagun destroys her life...
Mihir tells him to be prepared for the case ...
From there how wil the bond between Ishita and Ruhi grow...
article from TC here in my words...