Weightless follows the story of Leon, an astronaut tasked by his space organisation MASA to find a habitable planet. After months of travelling in space with no progress on his assignment, Leon to starts to lose passion for space travels and confidence in himself as an astronaut. However, on one eventful day, Leon got reminded of his younger self – bright and passionate in all things space, and starts imagining himself as a kid again.

Leon attempts to employ these memories with hopes of helping him get by each passing day; overcoming every setback encountered and assisting him in finding the planet. Will Leon continue to feel tied down by what used to be his dream job, or will he be able to rekindle his passion for space travels and feel weightless again?