What is the main conflict in You Can't Take It with You by Moss Hart?

You Can't Take It with You relates the humorous encounter between a conservative family and the crazy household of Grandpa Martin Vanderhof. Grandpa's family of idiosyncratic individualists amuse with their energetic physical antics and inspire with their wholehearted pursuit of happiness. Kaufman and Hart fill the stage with chaotic activity from beginning to end.