Substereo - Over & Over

A lonely robot escapes a dying earth which is covered in a mysterious blue cloud. He leaves on his spaceship carrying three seeds, which were given to him by his little girl. Seeds which represent a family of three.
He plants the and takes care of the flowers, but everything has to come to an end, and so the flowers eventually die, but not without a last breath of life. The mysterious cloud eventually catches up to him.