Nobody can write your story except you! You already have a good idea - why let some anonymous person on the internet have your story? If they give you their ideas, it's their story, and they could legally publish it and get credit.
Check out the Related Questions for ideas on how to write your own story.
You've already gotten halfway with your ideas - just keep going and write what you want, not what somebody on the internet tells you to do!
Hamster Heroes happened in 2005.
Mysterious Journey II happened in 2003.
Return to Mysterious Island happened in 2004.
The Mysterious Planet happened on 1986-09-27.
Rats are a predatory species, they can and will kill and eat a hamster.
If you dropped a hamster on its back it would go into shock.
It might die
It can happen as early as 3 weeks old, but mating at 2 months is best for you and your hamster.
Golden Venture happened in 1993.
Golden Axe happened in 1989.
Golden Sun happened in 2001.