You can watch the SPOILERS video.
Yes, I intended to give more direction...I have issues with managing scope.
You can see a lot of the intentions in Gitlab (look at the Markdown (*.md) files)
Basically, you have to head to the top and jump into the glowing Haptagon, which is actually your RingShip, and then you get to fly around, find the fish, and the next RainbowHaptagonPortal.