Here is the plot for a good humanoid story: A group of humanoid go on a spaceship to explore universe and find new planet for resources. They notice a planet where there is no lifeform. They notice that the planet is full of natural resources. So, they land on the planet. Their speceship gets in an accident; They lose communication with the base. Now, they are stranded in this new planet with no communication and limited oil and lubrication supplies (humaniod do not eat food or drink water). (think of people being stranded on an iland. NOW HERE IS THE INTERESTING PART: Soon they notice that the atmosphere is full of gas that corrodes humaniod body made of steel. They struggle for survival for couple of days/months. Some of the humaniods die. Others struggle to survive. They use dead humanoid's body parts as their own are already rusted. (think of people stranded in an island without food or water). They try to fix their communication decvice. Finally, they were able to contact with their base and get rescued by fellow humanoids. THE END Now develop this story to 5 page paper. You can easily develop it to 10 more more pages or make a movie based on it.