Astro, the prince of the Earth, was ill with the plauge. His parents had hired a Luma, one of the Moon Prince's otherworldly creatures to take care of their son.

Astro knew the prince of the Moon, and had a close relationship with him. A crush, if you will. He knew that the prince would do what's right.

Meanwhile, the Moon Prince's assistant, a humanoid Luma, looks at the Moon Prince with their usual unfading Cheshire Cat grin.

"What is your decision, your Highness?" he asks.