You wake up in a maintenance room, alone. Your partner's journal is out in the open. You probably shouldn't read it.
You wake up on a dying colonial vessel, destined for Mars. As one of the few survivors, you're trying to save your failing mission. Unfortunately Rachel's Journal betrays the truth that reality is a lot more complicated. You're immersed into this world with very little context. Sit in your sleeping bag and read as you try to figure out what's really going on.