This prequel to TLC’s “90 Day Fiancé” — the series about couples who unite in America under a special U.S. visa — tells of how the couples first became acquainted. From the initial in-person meeting to traveling to a faraway country, the stories of these potential spouses-to-be uncover hidden truths, navigate cultural differences and ultimately determine if online romance can lead to true love. The participants overcome various challenges to meet the person they believe is their soul mate, including 20-year age gaps, language barriers, and precarious boat rides down the Amazon River.