The Portal 2 - Chapter One

 

Tim was shaken. He looked at the low red light in front of him. His friends
were gone, back to their home planet. He was alone. He looked around the
cave, it was dark and the dust from the recent collapse of the tunnel behind
him hung in the air. He promised to stay and wait for them to come back, just
as they had promised to be back to help him and his entire race. The future
looked as dim and grey as the cave around him and his only hope was a nine
year old boy who just stepped into the last operational Portal. Tim sat down
next to the Portal, listening to the low humming sound that was emitted by
the Portal Stone.