Hello.
Ultimate Peter Parker and Serena Tsukino were invited to Oscorp by Harry Osborn.
To find Spider-Man 1's secret identity and join Norman Osborn on his problems fix with them because they agreed to it.
It was a trap.
An S.H.E.I..LD. LED droid from space robot attacks them with huge hands.
To kill Serena Tsukino and tries to kill her by Ultimate Spider-Man immediately made a choice to protect her as his girlfriend and true love.
Because there was no love in her life anymore.
So, he puts her and teams up with Iron Patriot that has Harry Osborn controlling it and fights the Led droids.
All four of them.
They won the battle and Serena Tsukino kisses Ultimate Spider-Man while sing her cutie moon rod as a beacon of hope.
It is his power charger source to fight evil.
To be continued.