His stuck moment: A widowed father of seven, Captain von Trapp keeps happiness at arm’s length since his wife died, treating his children like subordinates in a small naval regiment. He instructs the new governess, Maria (much to her dismay), to use militaristic calls with his children.
He gets (re)stoked: When the captain returns from a trip, he hears his children singing, beautifully, taught by Maria. He joins them in song and soon the distance between father and offspring narrows.
Unstuck result: Reacquainted with the joys of human connection, Captain von Trapp realizes he loves the free-spirited Maria and calls off his engagement to the icy Countess Elsa Schräder, who wanted to ship his kids off to boarding school.