In one day, 24 bands will embark on a 24-hour competition to be deemed the Make A Band Famous champion. But it's not going to be easy.

Starting on Wednesday at 8 p.m. on MakeABandFamous.VH1.com, the 24 finalists will be put to the test to make music in as "mysterious and difficult ways" -- and you can watch it all play-by-play via livestream on MakeABandFamous.VH1.com. So what exactly does mysterious and difficult mean? Well, we can't give it all away, but Fall Out Boy's Pete Wentz and Patrick Stump -- who are confirmed guests on the livestream -- say the final 12 should be prepared to get cozy.

"We're going to randomly dissassemble the bands and put them together like a crazy collage, we're going to make 12 bands and make six bands," Stump said. "We'll call them 'superbands.'"

So who will make it out alive? According to Wentz, the one's who get the "secret" of a good collaboration: "Knowing what your strengths are and what your partner's strengths are and not stepping into their areas."

It all kicks off Wednesday at 8 p.m. ET with judges Natasha Bedingfield, musical director Adam Blackstone, YouTube personality Kurt Hugo Schneider, and West Coast indie producer and composer Robert Schwartzman, as well as mentors Travie McCoy, Chris Daughtry and singer/songwriter Bonnie McKee. In addition to Fall Out Boy, there will also be guest appearances from Benji and Joel Madden, Ed Sheeran and Colbie Caillat.

Be sure to vote for your favorite artist at MakeABandFamous.VH1.com.