Mister Rogers brings a cape, top hat, and opera glasses because it is opera day. Betty Aberlin visits disguised in a feather boa. In the Neighborhood of Make-Believe the opera is being produced. Sara Saturday sends the King a photograph with her regrets that she can’t attend. In the opera, a baby prince misses his mother who is going out. The baby prince objects, but mother goes anyway, leaving him with his grandfather and a babysitter. They play peek-a-boo.