This trailer is done by Youtube user MR88668866. Here is his synopsis:
The origins of the legendary British spy. Michael Fassbender plays James Bond before he became 007. Liam Neeson trains him to become a spy. Leonardo DiCaprio plays the villain of the film, and he is a very rich arms dealer, who uses his money for terrorism. Gary Oldman plays M. Marion Cotillard plays a sexy double agent. Joseph Gordon-Levitt plays a CIA agent. Michael Caine plays a spy who was a good friend of Bond's father. Witness the origins of James Bond.