A Case of the Sing-Alongs / Ms. O Uh-Oh

When Mayor Macklemore catches a case of the Sing-A-Longs, Olive and Otto must discover the cause before the Mayor sings his way out of his job. When a Ms. O from the past shows up at the office, Otto and Oscar must send her back to the day she came from or risk causing a time catastrophe.

The show’s own verdict is on its page.