Stan and Olivia pretend to be astronauts.

The twins search for their missing ice cube.

Stan and Olivia make up their very own song.

The twins learn that caring for things isn't easy.

Stan and Olivia try to clean their room.

The twins offer to help Puff take a nap.

Reach for the sky -- Stan and Olivia are sheriffs.

Olivia offers to help Stan learn how to keep secrets.

The twins make their own cuddly toy.

Stan and Olivia play train with Bigfoot.

The twins try to make a lousy day a little better.

Stan and Olivia play in their PJs.

The twins really want to open their fancy jar of play clay.

Stan and Olivia struggle to figure out an object's name.

A seagull isn't friendly.

Seagulls won't leave Stan and Olivia alone.

Olivia forgets her playhouse's password.

The twins can't wait to throw Bigfoot a surprise party.

Podium is unimpressed with Olivia's painting.

The twins make a triplet that they can play with.

Stan and Olivia open a restaurant.

Stan and Olivia become twins with Bigfoot and Puff.

The twins give Podium a boat.

Bigfoot wants to be the leader, but Olivia won't surrender the job.

While their parents are away, the twins hang out with Magma.

Stan and Olivia trick Podium into helping them.

Stan tries to teach Olivia good manners.

Everyone wants to play Treasure Hunters, but nobody wants to be the baddie.

The twins need an ice cream cone.

Stan lets Olivia win a race.

Does Stan like Puff or Bigfoot better? Olivia wants to know.

Stan tackles Magma's maze solo.

Stan hides Olivia's book so she'll play with him.

Stan wants his present for Bigfoot to have the personal touch.

An imaginary trip to outer space proves problematic.

Bigfoot's tooth is loose.

Olivia and Stan want to draw but don't have paper.

The twins want to play different games.

Stan and Olivia argue from inside their dad's pullover.

Podium tests the twins' good mood.

Stan and Olivia love their selfies, but Puff doesn't.

Stan tries to change partners for the soap bubble contest.

The twins wonder why Bigfoot is wearing a crown.

The twins rush to make it to Magma's concert on time.

Stan strives to stop laughing -- forever.

Olivia tries to replace Stan while he's in traffic.

The twins learn the difference between tattling and seeking help.

Stan is scared of Bigfoot's toy.

Stan wants to join a collector's club, but he doesn't have a collection.

The twins pressure Bigfoot to open their letter.