(My first time trying to put my ideas in writing so criticism would be welcomed and im not sure ive seen this idea before. If theres any like it, please gimme the link or links.)
In the a warehouse, the process of a summoning circle for the worshiped all powerful ancient Phantom is being made with the bats surrounding the building to attempt to stop the ritual.
When the bats stealthy break in, they see a circle with salt (as the stars), rocks (as the asteroids) and so on and so forth (you get the idea) with the cult people setting their offerings around the circle ( space themed items, weapons, food and toys).
The bats ambush to stop the ritual but aren't fast enough to stop it and it starts to glow. The salt, rock and ect. start to float and circle around a particular weird neon green ball that slowly transformed to a silhouette of a person.
Meanwhile Danny is excited to be summoned for the first time but it doesn't feel like it was described it to be. He feels weird, like his body moved on it own. He had control but didn't. Then-
He heard it or thought it, it was weird.
His thoughts weren't his but they were
The summoning circle was for Phantom but Danny didn't realize both Dan and Dani were both Phantom too. And instead of being summoned by himself, the summoning forcibly merged their bodies together.
They looked at their hands, wondering how they looked for a brief moment before they started arguing, blaming each other for their situation, forgetting they were summoned.
They fought for control of the body, unknowingly fighting with the bats
To the bats, this being knew their next move and blocked or dodged when needed and was eerily quiet. It was unnerving.