The series was set in the late 19th Century featuring the adventures of railroad engineer Casey Jones (Alan Hale Jr.) and the crew of the Cannonball Express steam locomotive, fireman Wallie Sims (Dub Taylor) and conductor Red Rock Smith (Eddy Waller), working for the Midwest and Central Railroad. Casey lived in Midvale, a fictional town within commuting distance of St. Louis, Missouri with his wife Alice (Mary Lawrence), their young son Casey Jr. (Bobby Clark) and their dog Cinders. Although there really was a famous locomotive engineer named Casey Jones, the TV series was only very loosely based on him. However it did use the real names of his train, the Cannonball Express, and his fireman, Wallie. Kenneth Gamet wrote a children's format gentler Western series, against the more violent adult shows of the time like The Virginian. The series featured the same classical types of plots as other westerns such as train robbers, vandals, etc, but the plots also centered as much on Casey's interaction with his family, particularly his young son.