Ok For those who dont know about it, or dont understand the storyline this video holds i will explain
Protagonist: Kid with the Falcon EyePatch
Antagonist: Greedy "King" of the "Red Kingdom"
Scientist in flash back: The King of the Falcons
In the beginning it show a older man (The King of the Falcons) giving a message to the Protagonist then he hugs his "Girlfriend" After having a strange reaction to his mission. Judging from this reaction and him staring at the picture all the time i assume he knew it was a Suicide Mission. They go off to bring the antagonist to his senses about something, perhaps the ominous looking cloud (Was it a portal?) in the sky, above a tower with one beam of light stretching to it. It appears this light is caused by the crystal in the first scene in the lab. The flashback scene explains alot in a short time, The antagonist is easy to match up, the scientist is the Falcon King (stated above). The Antagonist tried to be a "Do it Yourself" guy to create a portal to another world using the scientist machines or he tried to prevent the problem of the Clouds but instead worsened the Situation. When the antagonist does this he causes a heavy whiplash in the room causing his wife to be sent into the energy grid below (and killed), he gets sent flying near another Energy grid and causes his Right arm to be vaporized, while the scientist saved the Antagonist's son and presumably left to die, but it appears the king thought the son died with his mom so he left. You can see the antagonist staring at a hologram of his wife mourning her death and you see clearly he has a robotic arm. Once the Falcons get to the throne room they are stopped by a "Paralysis Field" that freezes them in time all except Elite Guards (3 dots on the head that glow), The Protagonist and the Antagonist. This field is generated by the crystal from the looks of it implying that they are unlimited sources of limitless power and the only way to stop the "apocalypse". Once nearly all of the falcon squad is eliminated the Protagonist trys one last thing... he Jumps the antagonist and gets stabbed through the chest with the robotic arm, and the eyepatch falls revealing the common mark between them, and the fact the antagonist is the father of the protagonist (LUKE I AM YOUR FATHER moment there). The son apparently "Self-Destructs" and takes the Paralysis Field with him. The Antagonist Calls the falcon king and says basically he will link up with the tower to stop this "Portal" From ending the world, i assume because its the cause his son died for and he will honor his sons wish. The second beam is powered up and the tower shoots a third beam of light into the Clouds causing them to lift up as the protagonists girlfriend watches with joy, then the king tells her of the tragedy that took place and comforts her.
That sums it all in one nice big paragraph :P hope it helps!