What happens if I overdrafted 420 dollars at PNC Bank?

Ok, so yesterday I had 500 dollars wired from my paypal accout to my pnc checking account (not realizing it would take 3-4 "business" days). I then used my PNC checking debit card to pay a bill of 420 dollars. Yikes! So am I only going to get the overdraft fee of 30 dollars (Im pretty sure thats the fee - Ive never overdrafted before...), or is it going to be something really crazy because of it being such a high number... Any help would be greatly appreciated. Oh I have a "free checking" account, and I don't have "overdraft protection" if that helps...