The bill seeks to amend the 1899 Local Act 437, which pertains to the incorporation of the City of Mackinac Island in Mackinac County, Michigan. It introduces new legal language that grants the city additional powers and responsibilities, particularly in relation to the regulation of various activities and services within the city. Notably, the bill establishes a new chapter on "General Powers of City Corporation," which outlines the authority of the city council to enact ordinances aimed at maintaining public order, health, and safety. This includes the ability to regulate gambling, control the sale of intoxicating liquors, manage public entertainment, and oversee the inspection of food and other goods.

Additionally, the bill modifies the existing provisions regarding ferry services, allowing the city council to license and regulate all aspects of ferry transportation, including the imposition of fees for services such as baggage handling and vehicle parking. The amendments also stipulate that the enactment of this bill is contingent upon approval by a majority of the city's electors in a referendum. If approved, the changes will take effect ten days after the election results are certified.