One Man Stranded

A guy named Mike is a crew of a spaceship named Cosmo carrying a lot of important stuff to complete a space project. This spaceship travels a lot of distance to get to the destination. What the crews dont know is that they have another mission which is to save a crew at an unknown Aquatic planet. When they reach to the atmosphere of the planet, the ship has a problem with the system which makes it crash landed. All the crew successfully escape throught the escape pod. Mike is one of the survivor of the crash. He searched for help and no one seems to respond. He searched for scrap and blueprint to built machine and reinforcement againts all the creature, alien animal there is at the deep. He searched for the others. He found several lifepod but it seems like nobody survive. After several months or years when all hopes seem to fade away a signal came from the radio an it was the headquarters. They told all the survivors there is to go to the halfway cause they can't enter the planet, there is a key to a small rocket at the captain cabinet at cosmo that can carry survivors to a certain planet. So Mike quickly get his mini Submarine ready to the cosmo. Nearby the cosmo there is several alien living that's why Mike never went to the Cosmo. But he must go there cause that's the only way of exit. Mike turned off the light and made as little sound as possible to not attract any big predator alien out there. But tough luck cause one the predator found him and the alien try to catch him and damage the ship. Mike try to as fast as possible to escape but the big alien just too fast and damaged some part of the ship. He get in to small cave so that the alien can't get in and catch him. He waited for a long time until the alien is gone. Then it seemed to be clear, Mike start his journey again to the Cosmo. He saw the alien swimming by but it doesn't seem that the alien knew. So Mike swiftly passed throught silently and go to Cosmo straight away. When he arrived at Cosmo he try to find the captain cabinet and the passcode. After hours of searching he finally got the passcode and leave the planet for rescue.