You have the tool you need: After Effects. But there is no way to give you a step-by-step description of what you need to do in a simple forum post.
There are no plugins that will do this task for you. You have to learn the application -- you can't just jump in and start creating. You'll fail. People have tried to do that, and they've eventually done what almost every AE user has to do.
They start from Square One:
Getting started with After Effects (CS4, CS5, CS5.5, CS6, & CC)
You will eventually need to use tracking or Mocha. Both highly advanced functions of After Effects but they're built right in and readily available.
What you want to try to do is not difficult. But it's far from easy.
Do yourself a huge favor when learning how to do with some test video and use a dolly. If you must track jiggly handheld video you're asking for a lot more work than you need on a beginner's project.
Or create the scene in 3D. See the ver cool Video Copilot tutorial site and search there for the very cool "3D Room" aE project.
Welcome to the family. It's a fun application. Much more complex than you can imagine.