A series of clues in Spanish lead four real kids down California's famous Old Mission Trail in search of a solution to a mystery of history and hilarity! <br /><br />LOOK what's in this mystery - people, places, history, and more! <br /> Definition of missions, and their functions in the past and present • Mission architecture and design • Missions and the California Gold Rush • Why missions were founded, and the hardships involved • Indians' reactions to the missions, and the effects of the missions on the Indians • Father Junipero Serra's work with the missions and his burial • Important facts about each mission the group visits, including information on architecture, present-day status of the mission, the bells in each mission, circumstances surrounding the missions' foundings, and other distinctive trivia • P'o Rico, a Spanish governor in America • Secularization