Ethan Jensen, a wealthy, sharp-tongued, and scheming investor, and Wren Warren, a money-loving, high-maintenance designer, enter into a flash marriage. The two have been arch-rivals since high school. After their unexpected marriage, they begin a life of clashing at work, with neither willing to back down. Wren always believed it was a coincidental flash marriage, little knowing that Ethan had been planning it all along.