Sulla, the strongest Solar and Lunar Eclipse Dragonoid at 16,999, resides in a massive mansion. His siblings, Sarah and Luna, aged 18,000, embody opposites. Sarah, a respectful Solar Eclipse Dragonoid, is intelligent and obedient. Luna, a moody Lunar Eclipse Dragonoid, disrespects Sulla. Despite their differences, they only listen when Sulla is in danger.

Now embodying both Sarah and Luna, Sulla knocks on the door, questioning why the two of you won't listen to him.