A tip from an incredible innkeeper on Mackinac Island, Michigan, helped first responders find two missing girls from Kent County, Michigan.

Mackinac Island is an isolated island between the upper and lower peninsulas of Michigan. No cars are allowed on the island, and the only access is by boat or plane.

While the tiny island is charming and endearing to many visitors each year, the findings of this innkeeper were a strange occurrence for the tourist location.

Michigan State Police Troopers had put out an Endangered Missing Advisory around 11 p.m. on Tuesday for two sisters who seemed to have disappeared.

The girls, Alexis Ypma, 12, and Jenna Ypma, 9, were with their dad, Joel Ypma, who was allegedly showing signs of having a mental health episode.

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Family members became worried when he failed to drop the sisters off at school on Monday.

Authorities believe he may have driven his black Jeep Grand Cherokee to northern Michigan and was last seen in the Mackinaw City area.

The innkeeper noticed the Endangered Missing Advisory on the news and recognized the girls who were currently staying on the island.

The innkeeper notified the police and they were able to locate the sisters and their father.

It is suspected that Ypma took the girls by plane to the island as the three had flown in during the day on Monday.

Now, police are trying to reunite Alexis and Jenna with their family in Kent County.

Thanks to the fast thinking of this innkeeper, both of these young girls are safe and secure.