The Big Six-Five

When Caleb and Matthew get home from school on the last Monday of the year, David is sequestered in his office with his brothers, Nate and Patrick. They are endlessly curious as to what their dad and uncles are doing, and Caleb even starts an investigation- especially after Matthew peeks in and spots David, Nate, and Patrick blowing balloons up with helium. As they unravel the mystery, they realize an exciting surprise is around the corner for their grandad!