The Mr. Peabody & Sherman Show Season 4

The Guapo Brothers offer to give Peabody and Sherman their show back. But first, they'll have to capture Jesse James, Belle Starr and Genghis Khan.

With the outlaws still on the loose, Peabody rushes to protect the Federal Reserve Bank while Sherman attends a school friend's birthday party.

Peabody and Sherman shun electricity for a show about Colonial America. Ancient Rome's Gaius Maecenas is short on water for his heated pool party.

A loose-toothed Sherman sees America's first dentist. Peabody and Sherman fly to the 1970s to find a Golden Record for NASA's Voyager launch.

Sherman's missing comic book steals focus from a show about the Dewey Decimal System. Harry Houdini learns the art of restraint.

Agamemnon brings his band of brothers back from ancient Greece. Peabody and Sherman help history's first canine police force catch a gaseous criminal.

Sherman's determined to win a high-stakes cheerleading competition. A wealthy emperor in West Africa won't stop making extravagant purchases.

Bring Your Kids to Work Day brings chaos into the studio. Famed Viking explorer Leif Erikson offends Odin with his sophisticated tastes.

Super fan Maria hosts the show when Peabody and Sherman get trapped inside Orchoptitron. Christine's meddling threatens to derail Mulan's destiny.

Famed playwright William Shakespeare refuses to cast Peabody in his dream role. Inventor Peter Cooper injects a little too much life into his gelatin.

It's a wild day in the studio when an angry koala eats a local guide. Peabody meets the sausage maker who inspired him to invent the WABAC.

A nasty heckler pushes Peabody and Sherman out of their comfort zones. A lovestruck Edgar Allan Poe can't seem to find his dark side.

The neighbors lobby to perform live on the last show of the season. Abraham Lincoln needs to get to Gettysburg ... but he doesn't know the address.