[2] Bandleader Ricky Ricardo (Desi Arnaz) and his young son Little Ricky (Richard Keith) watch the latest episode of the Adventures of Superman television series, which concludes with the narrator stating that Superman will be making personal appearances in the coming week at Macy's Department Store in New York City.

As Ricky's wife Lucy (Lucille Ball) enters and sends her son to bed, she promises to take him to see Superman at Macy's.

Ethel and Fred Mertz (Vivian Vance, William Frawley) arrive and drop off favors for Little Ricky's fifth birthday party, which is scheduled for Saturday.

During the party on Saturday, Lucy dons her makeshift Superman costume (complete with a football helmet to hide her red hair) and steps onto the ledge, just as Ethel enters the vacant apartment with a pair of prospective tenants (Ralph Dumke, Madge Blake), who have arrived unexpectedly.

Meanwhile, Ricky returns home with the real Superman (George Reeves), who changed his plans once he heard that it was a child's birthday party.

When Ethel lets it slip that Lucy is on the ledge, Ricky and the Mertzes race to the window to find her still there, with her cape snagged on a drainpipe as the rain pours.