Millie, Lou, and Cornwallis search the forest for a shy forest folkie, Yooty. Millie can’t wait to become friends but Lou is very scared of her loud growl.

Putting off tidying up for too long has attracted Yukky Nummy to Millie and Lou’s tent. He’s very cute but Lou can’t stand their stinky new friend’s messy lifestyle.

Millie and Yooty search for Lou who has accidentally become Babby Yaggy’s new assistant. He’s certain that she’s brewing an evil potion to destroy the forest and tries his best to stop her.

Oh no, somebody is up to no good! Everyone is being pranked with terrible jokes! Millie and Lou are going to find out who’s responsible with the help of Shurman who has coincidentally decided to visit them today.

Bannie arrives to celebrate Pippi’s birthday and rock-out, but Lou is worried her loud wailing will ruin the perfect party that he has organized.