This type of bankruptcy is for the person who is barely making it, who can barely pay their rent or mortgage and food and has no extra money to pay debts. It relieves them of the debt and removes the creditors' rights to sue the debtor.
I used to advise 13s for two reasons: where consumers are behind on their house payments or they need more time to pay student loans, taxes, child support or alimony. Now 13s will be for credit cards and unsecured debt.