Four of the nation's top cake designers compete to make the cake for a couple's engagement party, but there's one GIANT catch. The couple isn't engaged yet! The proposal happens right before the competition starts and the pressure builds from there. With $10,000 on the line, the four competitors have to create 3-foot cakes in just 7 hours, and they'll need to get inspiration from a woman who may or may not be happy with what her boyfriend just proposed.