Burger King wants to bury the hatchet-- so to speak --with McDonald's for at least one day.

Burger King took out full-page ads in The New York Times and The Chicago Tribune , asking Mickey D's to join forces Sept. 21 to celebrate world peace. Burger King wants to open a pop-up store in a parking lot between two restaurants in Atlanta and create a McWhopper .

Why just Atlanta? They say it's the most neutral ground because it is halfway between Burger King's headquarters in Miami and McDonald's headquarters in Chicago.

The also insist they are completely serious about this:

"Our invitation might be unexpected, but it's 100 percent sincere. Burger King genuinely wants to unite with McDonald's on Sept. 21, 2015, to prepare and serve the McWhopper and get the world talking about Peace Day," Burger King assured McDonald's. "Naturally we'll only proceed if you're on board, so we created this site to help you better understand our proposal and realize the potential."

Burger King also says that they want to make this as easy as possible and would like as much input from McDonald's as possible. They even came up with a sketch of a few proposals of what the McWhopper might look like.

To read Burger Kings proposal you can check out their Tumblr blog or the video they created below: