Totus Tuus calls upon college students and seminarians from across the United States and Canada to carry out the mission of Totus Totus:
“To inspire in young people a true longing for holiness, a deep desire for daily conversion and openness to their vocation by the constant challenge to give themselves entirely to Christ through Mary and by continually strengthening their prayer lives in imitation of Her.”

These young men and women are hired for their energy, enthusiasm, love of the Faith, commitment to spiritual growth, ability to work with a team and a desire to work with youth. Parish missionaries are grouped into teams of four, each consisting of two men and two women, and are invited to a different parish every week of the summer where they conduct a week-long “parish mission,” teaching and inspiring the parish’s first through twelfth grade youth.