Any domestic fraternal benefit society may be converted and licensed as a mutual life insurance company by compliance with all of the requirements of the general laws relating to the financial requirements of mutual life insurance companies. A plan of conversion shall be prepared, in writing, by the board of directors setting forth, in full, the terms and conditions of conversion. The affirmative vote of two-thirds (?) of all members of the supreme governing body at a regular or special meeting shall be necessary for the approval of the plan. No conversion shall take effect unless and until approved by the commissioner of insurance, who may give approval if the commissioner finds that the proposed change is in conformity with the requirements of law and not prejudicial to the certificate holders of the society.