N.D. Cent. Code § 32-17-13

A defendant in an action to determine adverse claims, proceeded against by name or as an unknown party, or the defendant's representative, on application and sufficient cause shown at any time before trial, must be allowed to defend on such terms as may be just, and any such defendant or defendant's representatives upon good cause shown, and on such terms as may be just, may be allowed to defend after trial and within one year after the rendition of judgment therein, but not otherwise.