It's the ultimate relationship experiment, as six brave couples must fulfill or break a promise from the past: a pact to marry if both are still single by a certain age. Best-selling author and relationship expert Shan Boodram hosts as the couples face the ultimate question: Is my marriage pact partner my forever partner? Through romantic dates, compatibility challenges and everyday life thrown into the mix, they've got just three weeks to decide whether to say, "I do," or call it quits for good.