Harriet's textile class have won a trip to London Fashion Week, but she and her best friend Nat face an outfit disaster before they even get there.

Harriet makes a bold fashion choice for her meeting with Wilbur and gets posing tips from a pro — but her career may be over before it's even begun.

Harriet struggles with how to break the news to Nat. But when she gets back to school she learns that Nat — and everyone else — knows the whole story.

While Harriet tries to put her social slip-up behind her, chaos reigns at Infinity. Nick arrives at school as the students prepare for the talent show.