The Last Two? #1: One Small Step.

Five minutes to the year 2095 and the Earth is dying, like that tonight. Desperate to save them, a man and woman rocket their two kids to rendezvous with the kids' grandparents who have previously embarked on their own earthly escape. But, because this is science fiction and anything that can go wrong will go wrong, the kids' ship veers off course and crash lands on a strange planet. And that's where the adventure begins for quite possibly The Last Two humans in the cosmos.