On their way to a camping trip, Jack and Sam stumble on an old cave, and find themselves travelling through time to help Jason and the Argonauts and King Phineus to escape from the food-stealing harpies. This exciting graphic novel was written by Linda Chapman and illustrated by Dylan Coburn.

* Collins Big Cat Progress books are specifically designed for children at Key Stage 2 who have a Key Stage 1 reading level, giving them age-appropriate texts that they can read, building their confidence and fostering positive attitudes towards reading.

* Text type: A graphic novel

* Curriculum links: History