BOR: That's the trouble. DOCTOR: And that life here will be very hard. DOCTOR: It's the end of the universe. DOCTOR: Yes, well, before you start, perhaps one of you could show us the way to the damaged engine. I shall not say that again. I'm the Doctor, and this is Nyssa. KARI: He must have had the strength of a giant. TURLOUGH: The ship's on automatic, Tegan. VALGARD: What ship?
Plan: A: The Doctor; Q: Who discovers that the pilot dumped the ships fuel billions of years ago? A: another automatic fuel dump sequence; Q: What is the ship going into because of the damaged engine? A: the destruction; Q: What will happen to the universe if the fuel is dumped into space again? A: Nyssa; Q: Who makes a decision that affects everyone? Summary: The Doctor discovers that the pilot had dumped the ships fuel billions of years ago and that the ship is going into another automatic fuel dump sequence because of the damaged engine. He determines that if the fuel gets dumped into space again, it will cause the destruction of the universe. Nyssa makes a decision that affects everyone.