It’s the year 27020 and it’s been over twenty millennia since humanity had to flee off the face of Earth, a planet that had begun to disintegrate from pollution and toxic waste. According by word of mouth; ships had flown out into outer space in search of other liveable planets. They were all liveable in, surprisingly, but only if their bodies were able to adapt to the new environment. It's been pretty great the past two hundred decades for the humans that have adapted and advanced. Children will never know what it was like to walk on land, but no one's ever known for years anyways.

Yoongi is the new generation of navigators and it's not fun and games. They (along with the last generation, and the next one, and the one following that, until infinity) all work tirelessly to intensively test and create newer aircrafts, to push the limits of current aviation technology, to create the best airships. And it definitely doesn't get any easier when some new rookie gets promoted to co-navigator and severely throws Yoongi's world out of balance.