It depends a bit on which type of call.
If it´s a call with HR, there is no need to panick: the classic motivational & CV questions.
I guess it is going to be that, since from what I can read in your post, it seems that it´s the first point of contact you have with them.
Mostly, you need to do FIT preparation.
The Integrated FIT Guide can help you, since itt provides an end-to-end preparation for all three MBB interviews, tackling each firms particularities and combining key concepts review and a hands-on methodology. Following the book, the candidate will prepare his/her stories by practicing with over 50 real questions and leveraging special frameworks and worksheets that guide step-by-step, developed by the author and her experience as a Master in Management professor and coach. Finally, as further guidance, the guide encompasses over 20 examples from real candidates.
Furthermore, you can find 2 free cases in the PrepL case regarding FIT preparation:
Feel free to PM me for disccount codes for the Integrated FIT Guide, since we still have some left from the launch!
Hope it helps!