Mysteries abound in the swirl of troubles that Lum and Abner have found themselves in, while caring for the abandoned baby. Lizabeth is still missing, the Black Pelican who wrote the threatening note is still unidentified, and now Abner thinks he has been robbed.
More notes arrive, but is it the Black Pelican who robbed Abner? Lum and Abner discuss what to call the baby. Should they name him for themselves? What about Charlie?
Mousey enters to offer his detective services to find the Black Pelican. Heigh Ho Muskrat! His services may be needed for a different job… the baby has disappeared from his crib!