Mont. Code Ann. § 70-28-101

An action may be brought and prosecuted to final decree, judgment, or order by any person or persons, whether in actual possession or not, claiming title to real estate against any person or persons, both known and unknown, who claim or may claim any right, title, estate, or interest therein or lien or encumbrance thereon adverse to plaintiff's ownership or any cloud upon plaintiff's title thereto, whether such claim or possible claim be present or contingent, including any claim or possible claim of dower, inchoate or accrued, for the purpose of determining such claim or possible claim and quieting the title to said real estate.