I have no idea what you're talking about. I can only guess that there was a default judgment against you. If this is the case, you will need to do an "Order to Show Cause to Vacate a Default Judgment." In California there is a procedure for you to follow but, in short, you'll need to provide these two things in order to be granted this order:
1) A good reason why you did not show up in court.
2) A valid defense - this explains to the court why they should bother reopening a case. If you have no defense, the result would be the same whether or not your reason for not showing is acceptable - why waste any more time?