Six months after Iron Man, Tony Stark resists calls from the United States government to hand over the Iron Man technology, which is causing his declining health. Meanwhile, Russian scientist Ivan Vanko uses his own version of the technology to pursue a vendetta against the Stark family. It is the sequel to Iron Man (2008) and the third film in the Marvel Cinematic Universe.

References:
https://en.wikipedia.org/wiki/Iron_Man_2