The musical you are referring to is called "Come From Away." It is based on the true story of passengers who were stranded in the small town of Gander, Newfoundland, Canada, after the September 11th attacks. The town's population of 9,000 doubled overnight as 38 planes carrying 6,579 passengers were diverted there, and the townspeople opened their hearts and homes to the stranded travelers. The musical tells the story of the bond that developed between the travelers and the townspeople during that time. It has received widespread critical acclaim and has been performed in various cities around the world.