Enzo Wayde is just a kid.
The sun is dying.
A spaceship that can surpass the speed of light allows a limited number of humans to escape our solar system with its dying solar system.
How did you expect the world to end? An asteroid, global warming, a solar flare, nuclear war, or an EMP? Either way, you'd probably be just as ill-prepared for the end of the world as young Felicity was. Despite this, Felicity has a strong will to survive, and with the help of their found family, might just be able to.