Peabody and Sherman confront bizarro versions of themselves after entering an alternate reality that's ruled by a cyborg Mrs. Hughes.

A beachy-keen Sherman squashes a rival by jumping the shark. Famed sculptor Frédéric Bartholdi learns to stand up to his overbearing mother.

After scoring surprisingly low on an IQ test, a time-traveling Peabody meets his match in brainy Mary Anning, the world's first female paleontologist.

Our hot-and-cold co-hosts come to blows over the temperature inside the studio. Distracted designer Ziryab unveils his vision for a royal wedding.

Everything's off-kilter when Peabody and Sherman attempt to swap brains. Comic book inventor Koikawa Harumachi unleashes a literary monster.

Sherman gains unexplained superpowers when a meteor hits the penthouse. Messy math whiz Ada Lovelace writes the code for the world's first computer.

A mouse on the loose in the penthouse makes Peabody's skin crawl. The inventor of the world's first submarine sets out to find a sea monster.

Peabody vows to teach Sherman that honesty is the best policy. Pioneering private eye Allan Pinkerton searches for a stash of stolen diamonds.

A visit from Johnny Appleseed turns the studio into a woodsy wonderland. Self-absorbed pharaoh Queen Hatshepsut opens up the world’s first zoo.

Peabody and Sherman help Hobson cross items off his bucket list. Explorer Robert Peary's historic North Pole trek takes a detour to Santa's workshop.

Sherman hosts a telethon to help his school -- and win a prize. A time-traveling Peabody steps in to prove opera star Enrico Caruso's innocence.

A spook-tacular show turns Peabody and Sherman into monsters. The inventor of the world's first automobile is also one of the world's worst drivers.

The Guapo Brothers' rival talk show steals Peabody and Sherman's audience. Mountaineering maven Lucy Walker makes history on the Matterhorn.