Rudy reaches his 10th birthday, and Eris and her family plan a surprise party for him. Meanwhile, the strange orb hovering over the city remains a mystery as powerful entities across the world begin to take note of it.

Rudeus, Eris, and Ruijerd make it to a city. They need to earn money for their journey, and decide to register as adventurers, but Superd like Ruijerd aren't allowed inside. Rudeus has a plan, but how well will it hold up in practice?