"90 Day Fiancé" is a reality television series that follows couples who have applied for or received a K-1 visa, allowing foreign fiancés to enter the United States. The show documents their journey as they navigate cultural differences, family dynamics, and the challenges of planning a wedding within 90 days. Each season features multiple couples, showcasing their unique stories and experiences. The series highlights the complexities of love and relationships, often revealing the emotional and logistical hurdles that arise when merging different backgrounds and lifestyles.