Luna Delaney was planning a vacation to Cancun with her friends. When Luna applies for a passport, she asks for her birth certificate and notices something odd. Her father is not the father listed on her birth certificate. Luna finds an online match for her biological father in Italy. Encouraged by her friend, Chad, Luna embarks on a solo trip from Erie, PA, to Italy to meet her father. She meets Antonio who offers to help Luna on her journey. She meets her biological father, Cosimo Vernetti, but a stroke leaves him unable to provide answers.

Luna returns home until she learns that Cosimo has died and Luna is in his will. When Luna returns, she is reunited with Antonio. She learns that her father owns Vernetti Vineyards, whose future now depends on her. Luna confronts her mother and demands to know the real truth about him. Will Luna's mother reveal the truth she's been hiding for decades? Luna is now faced with a decision that would forever change her life.

I Never Knew shows us that life is full of choices and risks. Sometimes the decisions that scare us the most are also the most rewarding. Follow Luna on an emotional journey as she discovers that there are people in her life who are worth risking it all.