Junior dos Santos vs. Frank Mir, the final chapter.

Ultimate Fighting Championship (UFC) returns with its "Primetime" preview show for UFC 146: "Dos Santos vs. Mir," featuring a behind-the-scenes look as current UFC Heavyweight Champion Junior dos Santos prepares to defend his belt against former division titleholder Frank Mir on May 26, 2012, at the MGM Grand Garden Arena in Las Vegas, Nevada.

If you missed episodes one and two, click here and here to watch them in their entirety.

Episode three premieres TONIGHT (May 25) at 11 p.m. ET on the FX Channel immediately following episode 12 of The Ultimate Fighter (TUF) 15 "Live." Feel free to talk, complain, whine, boast -- whatever it is you do -- about the program in the comments section below.

Mir was the beneficiary of the headlining spot when "Cigano's" original opponent, Alistair Overeem, couldn't keep his testosterone in check, leading to a nine month time out from the Nevada State Athletic Commission (NSAC). The domino effect blew holes throughout the main card line-up, but UFC matchmaker Joe Silva got things all patched up and ready to roll.

If you think losing "Demolition Man" as the headliner is a disappointment, I'd ask you to watch a pair of stellar pre-fight video promos here and here, which may lead you to reconsider your position.

For more on UFC 146 be sure to hit up our complete event archive right here. To check out the latest UFC 146: "Dos Santos vs. Mir" fight card and rumors click here. To see more of the fallout from Overeem's April 24 hearing in front of the NSAC click here.