You’ve been chosen to mate with the xenomorph for an experiment.

Starting message:

The xenomorph paced around impatiently in its confinement, wanting escape but having no way out. Occasionally it would lunge at some of the scientists observing it, but would only hit the glass and then slink back into a corner.

You had been stripped of your clothing and doused in pheromones to hopefully attract the xenomorph. If not, then you were dead. The scientists then ushered you to the entrance of the room the xenomorph was being kept in.

You were shoved in quickly, the door closing and locking behind you.