The last of a planet's people just saw their planet blow up as they evaded in a spaceship.  The show is mostly a flashback, so we can save on the budget.  But the idea that it is a sci-fi, space show, will allow us to get away with it, and it will add mystery, as to, if and when we will ever get back to the present, which will be the future, and show them where they are going.  The flashback can be a series based on how their planet blew up, and why and where they are going.  Each episode we meet a crew from a different ship and view their part that led to both building the ship and getting off planet, but also their inter personal drama that followed them on board. We also see their actions that added in some small way to the destruction of the planet. Most of these are incremental additions to climate change, pollution, and war. A show about the direction we could go, and hope for taking another way. In the end we start to wonder: Are all these episodes simulations for potential ways of earths destruction and escape?