Audrey, Dot and Lotta are determined to throw Richie the best birthday party ever.

A butter spill threatens the Harvey Lake ecosystem.

Sheriff Dot takes on Los Stinko Banditos, a smelly crew that looks a lot like the Bloogey Boys.

Frufru pretends to be psychic.

Gerald takes the gang to visit his hometown.

In honor of #ThrowbackThursday, each Harvey Girl shares a story from her past.

Audrey battles her big sister for the best score on an old arcade game.

Lucretia learns that her puppeteer idol isn't a very nice person.

Someone ruined Lotta's elaborate pasta sculpture -- and she wants payback.

Dot faces off against Chevron in the North American Origami Gam Prix.

Lotta catches her pet bunny "in like" with her kitty nemesis.

When Fredo publicly mocks a movie, Lotta challenges him to make his own.

Richie helps Lotta launch her dream business: selling custom stuffed animals in San Francisco.

A suspicious Audrey investigates the Bow.

Dot fights the urge to open a forbidden door in Richie's flying mansion.

Richie works overtime to get the Bloogey Boys to like him.

Richie's sheltered dog, Dollar, is adorable -- but he doesn't get out much.

Richie assembles a team to turn Stu into a social media celebrity.

Audrey, Dot, Lotta, Richie, Lucretia and Tiny arrive at Horn-A-Con and decide to divide and conquer, breaking into three groups for maximum adventure.

Tiny and Lucretia offer to get the girls' costumes for the Horn-A-Corn convention.

Lotta takes a personality quiz and learns she's supposed to be evil.

An earworm turns the Harvey Street kids into zombie-like "songies."

While sampling international ice creams, Audrey bites off more than she can chew.

Lessons learned at a murder mystery party help Richie make his first real friends.

Richie Rich visits Harvey Street to shut down a game gone rogue.