Simple way would be they have to search a lot and time passes, about other details like if Pia is needed, they have to find a way. Since it's your story, you would come with the best alternative.
Plus they possibly have to do some overnight Puja in a mandir to activate powers or get hints.
Okay, thanks for the suggestions...
Hopefully, I'll be able to come up with something...
See, weapon to bina Daivik ke milega nahi cos only Pia can pick it up and give to Ansh... Isiliye samajh nahi aa raha hai.
Let me PM you.