In round one, a pair of brothers is determined to whisk away the competition as they take on a team of best friends on the western stack. In round two, a new couple attempts to avoid striking out against a married couple who is set on making their dreams come true on the birthday stack. The winners from each round face off against the mad science stack to earn a shot at The Mega Stack for a chance to win the grand prize of $250,000.

In round one, siblings are ready to take down the competition when they go against a couple and take on the sports stack. In round two, a husband and wife who hope to win the prize money and take their children camping, take on family members ready to do what it takes as they confront the ‘50s diner stack. The winners from each round face off against the national parks stack to earn a shot at The Mega Stack for a chance to win the grand prize of $250,000.