"A potato chip. HOW did you summon a giant, killer potato chip?!"

"Well, it was that or Nutella!"

"Oh my god. WHY did I bring you along again?"

"Because I blackmailed you! Remember?"

"...Oh yes, I remember all right..."

Meet Catherine. She's your normal popular teenage girl, except for one small difference: she's a witch. She literally has to help fictional characters get through their perilous journeys, and finish their quests.

But things take a huge turn when Leo Westfield discoveries her biggest secret. He says he won't tell anyone about her, under one condition: she takes him with her the next time she goes through a book.

She reluctantly agrees, after all, what's the worst that could go wrong?

Turns out, a lot of things can.

From dealing with fictional crushes, killer potato chips, and a man-eating monster, Catherine and Leo have a lot to go through in order to help this next character. And the fact that someone keeps trying to kill them doesn't help them...