The StoryBots climb inside a computer to learn about input, output and processing. Snoop Dogg guest-stars as a tech-savvy operating system.

The StoryBots help the lead of a subterranean musical deal with the pressures of fame. David Koechner guest-stars as a pirate.

A trip to a landfill teeming with trash teaches the StoryBots the importance of recycling. Tony Hale guest-stars as the owner of a sorting facility.

The StoryBots jump into a vending machine to find out where candy bars come from. Alyssa Milano guest-stars as a chocolatier.

The StoryBots take on an awfully big task: counting every kind of animal there is. Kristen Schaal guest-stars as a biologist.

A talking boombox turns it up to show the StoryBots how ears help us hear. Ali Wong guest-stars as an all-knowing brain.

The StoryBots get a bug's-eye view of a flower's journey, from seed to bloom. David Cross guest-stars as Bang's free-spirited pal.

No two people are exactly alike, thanks to a little thing called DNA. Reggie Watts guest-stars as a nurse who explains it all.

To see how cell phones work, the StoryBots hop inside one. Jennifer Garner guest-stars as a cell tower switching-station operator.

The StoryBots travel to the Land of the Lymph to learn how a cold virus spreads. Wanda Sykes guest-stars as a doctor with the sniffles.

To understand why humans need to brush their teeth, the StoryBots travel to a mouth taken over by a gang of bad bacteria. Whoopi Goldberg guest stars.

A piece of broccoli and a rebellious cupcake teach the StoryBots about proper nutrition. Christina Applegate guest-stars as a bakery owner.

To find out where electricity comes from, the StoryBots go straight to the source. Edward Norton guest-stars as an electronics salesman.

The 'Bots blast off into outer space to learn how planets are made -- and what they're made of. Zoe Saldana guest-stars as an astronomy professor.

We use the toilet every day, but how does it work -- and where does our waste go? Jason Sudeikis guest-stars as a plumber in the know.

The StoryBots brave a castle on a dark and stormy night to understand how eyesight works. Maria Bamford guest-stars as an eccentric scientist.

The StoryBots embark on a high-flying adventure to learn how airplanes fly. Kevin Smith guest stars as the superhero Super Mega Awesome Ultra Guy.

To learn why the sky is blue, the StoryBots get a science lesson in colors. Garfunkel and Oates' Riki Lindhome and Kate Micucci guest star.

After tumbling into a tuba, the StoryBots enter a magical, musical wonderland. John Legend guest-stars as the King of Music.

The StoryBots visit an amusement park in the sky to learn where rain comes from. Tim Meadows and Chris Parnell guest star as a pair of silly reindeer.

The StoryBots visit mountaintops, the deep sea and even outer space to understand how night happens. Jay Leno guest stars as a helpful knight.

The mysterious Molepheus takes the StoryBots on an underground journey to learn how French fries are made."Weird Al" Yankovic guest stars.