Four Christian teens struggle to keep a promise to remain pure and righteous in The Young Believers. Bound to a mutual pact to avoid drinking, drugs, and premarital sex throughout high school, longtime friends Delilah, David, Leah, and Luke run into temptation and trouble in their senior year. First, Delilah faces pressure from her boyfriend to take their relationship to another level. Then, David must decide whether or not to try alcohol. Next, Leah refuses to open her heart during her parents' divorce, and Luke is lured into playing music that doesn't glorify God.