In the year 2517, after the arrival of humans in a new star system, follow the adventures of the renegade crew of Serenity, a “Firefly-class” spaceship. The ensemble cast portrays the nine characters who live on Serenity. Five hundred years in the future, a renegade crew aboard a small spacecraft tries to survive as they travel the unknown parts of the galaxy and evade warring factions as well as authority agents out to get them.