In the arid heartland of Western Australia, Lucia and Max visit the remote site of the largest science facility ever built by mandkind: the SKA (the Square Kilometre Array) radio telescope. There, they learn about the global effort behind the SKA and the fundamental scientific questions it hopes to answer, including: Is there life somehwere else in the universe? Next, Max and Lucia enter the ancient land of the Yamaji people, Aboriginal Australians who shared star stories for more than 60,000 years. Artist Charmaine Green guides Max and Lucia through the land of her ancestors and introduces them to other artist, their paintings, and their tales.

Through their journey, Lucia and Max discover how much the scientific world and the ancient world have in common, for we all live under one sky - a shared sky.