80/20 Loan in MI forclosure?

We have an 80/20 loan. We received notice that the first loan was being foreclosed on and we didn't owe any money. What happens with the 20 loan? Both loans are through Wells Fargo.
Update: I'm sorry. We are deliquient and accepted that we will be walking away. I want to know what usually happens with the second mortgage. It was considered a "home equity" loan.
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