The Hangover Part II has already had its fair share of legal issues, including Mike Tyson's tattoo artist suing for copyright infringement, and a stuntman who claims to have suffered brain injuries on the set. A new lawsuit was filed last week which alleges the entire sequel's plot was pilfered from another script.

Screenwriter Michael Alan Rubin claims that the comedy blockbuster was stolen from an original script he wrote entitled Mickey and Kirin, which is based on his own honeymoon experience with a Japanese bride. Michael Alan Rubin married a Japanese woman named Tamayo in 2007, and took her on a honeymoon to Thailand and India. It seems arguments arose over Michael Alan Rubin's financial status, which lead to the new bride refusing to share a hotel room with her new hubby. He reportedly was hired by a Bollywood producer to star in several Indian movies. This inspired him to write the Mickey and Kirin screenplay, which he registered with the Writers Guild of America. Here's an excerpt from the lawsuit.

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"The production of The Hangover Part II is not a complete 'literary' or 'artistic' works of the Hangover Defendants as credited in The Hangover Part II. In fact, the production of The Hangover Part II was a result of infringement of the Plaintiff's treatment Mickey and Kirin and exploitation of the private real life of Plaintiff in an insulting manner."

Michael Alan Rubin is suing for copyright infringement, misappropriation of his publicity rights, and defamation. It is also said that he is representing himself in the lawsuit. However, Michael Alan Rubin offers no proof that anyone involved in making The Hangover Part II even knew who he was.

A settlement was reached over the tattoo artist's lawsuit against The Hangover Part II, but the stuntman's case is still pending.