Soya is an ordinary boy, with one problem: He's lost his memories and lives with a giant cat and a maid. To make matters worse, his city is under attack by a giant alien craft, and it doesn't come in peace. It comes in... "Peas"?

The dragon has awoken on the moon, and is threatening to destroy Earth like it did Sirius. Nebula has a plan to seal him, but can the people of Earth put their hatred towards him aside after everything that happened?