Sign Posts and Milestones

1.1 No Exit
  a: wake up
  b: a drawer of objects
  c: discovery

 2 The Din From Below
 a: North's flashback (photograph)
 b: the mechanic is sick (heartbeat)
 c: Cyrus finds something strange in astrometrics
 d: North's flashback
 e: the strange clanging is identified

 3 A Fallen Sparrow
 a: Cyrus' duel of wills
 b: away team prep
 c: rendevous
 d: a difficult decision to be made
 e: Cyrus' primary objective

 4 Doctor's Flashback
 a: Mayhew's visit with dying mechanic
 b: New mechanic determine's that communication failure with Earth is due to Earth not being on the  line.

 5 Soldier's Flashback
 a: mechanic's funeral
 b: Cyrus confron'ts Mayhew.
 c: entered into SILO's cmd console: fail-secure

 6 Fail Secure
 The build up so far has set up a situation where Dr. Cyrus is the most important crew member of the   SILO. But he, SILO (computer) and Mr. Mayhew band together and attempt to override the mission's primary objective in order to divert course to PLANET X.
Planet X is Mayhew's destination. Cyrus is tempted by an obsessive pursuit of knowledge. The human race is at stake but Cyrus has touch with that through depression and isolation.
The plot comes down to sacrifice. Who is willing to sacrifice the most in order to achieve their mission. At the end Capt. North is willing to destroy the SILO if Cyrus doesn't surrender.
Cyrus is willing to cut off the oxygen supply if the others don't relent.
Dr. Goodchild is willing to kill to save the human race.

 7 Contact Horizon
 They arrive at their destination

The Premise In 100 Words

A mission out to the distant reaches of our solar system. A brilliant xenobiologist. A mountaineering soldier. A Nigerian doctor. A mercenary. A mysterious rendevous.  A desperate rescue mission. An old man's ferried to an remote destination. A pacifist takes up arms. A soldier returns home. A lengthy journey saves time by taking an improbable path. A cosmic war between giant trees and crystals colliding into other in space. Earth invaded by worms. A scientist reconciles with his estranged son. Man kind discovers we are not alone in the heavens. Memory is our concousness skipping through time. Civilization is destroyed. A man stands in the wheat fields and waves to himself in the stars.