Breaks Not Working

well i went for a drive with my dad in his car and we heard a rubbing noise coming from the rear wheel of the car then it stoped after a short time... about 5 min after that we had no breaks. when we stoped the rear pasanger side wheel was smoking so we pulled off the tire and hub the break pad was worn to the metel so that would explane the noise but how come the other breaks are not working...there dosent seam to be anything wroung with the other breaks. shouldent the other breaks still work just pull to one side? anyone have any idea what the problem is?

have you checked the reservoir? Sounds like your wheel cylinder went and you dont have any fluid left in the system