Quote from the developer describing gameplay:

Your character wears special, energy-infused gloves, which are what allow you to fly. Their energy depletes as you fly at an upward angle, and if it runs out, you'll start falling out of the sky. In order to stay airborne you have to replenish your energy by diving downward, or flying close to surfaces.

You play as a stunt flyer, and you're trying to score as many points as you can within the time limit by flying through narrow gaps and holes, or really close to surfaces.