Arriving in London in the 1880s, orphans Jack and Amy find themselves the prey of the worst elements of society until they receive aid from William and Catherine Booth and their Salvation Army people.

After coming to Wittenberg to seek an education, Karl Schumacher becomes a student of Dr. Martin Luther and, when the latter is declared a heretic, Karl accompanies him when he travels to Worms to defend his views.

In 1843, twelve-year-old Perrin joins his aunt and uncle, well-known missionaries Dr. Marcus and Narcissa Whitman, in the Oregon Territory where they live with the Nez Perce and Cayuse Indians.

His friendship with Peter Cartwright, a Methodist circuit-rider evangelist, enables thirteen-year-old Gil to pursue his dream of locating his mother who was kidnapped by the Sauk Indians during the War of 1812.

In 1817 a teenage brother and sister are relieved from the abuses of Newgate Prison in London by the prison reform efforts of Quaker minister Elizabeth Fry.

Jova, a seven-year-old Kru boy in Liberia and a captive slave of his people's enemy the Grebos, witnesses the dramatic conversion to Christianity of the Kru prince Kaboo and his subsequent disappearance; seven years later, in 1893, Jova sails to America to find Prince Kaboo and bring him back to rule his people.

In 1854, after being wounded while serving as a drummer in the British army in the Crimean War, twelve-year-old Robbie Robinson is cared for by Florence Nightingale and becomes involved in her efforts to improve the medical care of the sick and wounded soldiers.

When her family moves to Daytona, Florida, from Statesboro, Georgia, after the Ku Klux Klan burns down her father's business, eight-year-old Celeste Key becomes one of the first students at Mary Bethune's new school for African-American girls.

In 1897 Adam Christian joins Sheldon Jackson's expedition to take food and supplies to hundreds of starving gold miners in the Yukon.

When his father tries to save the family farm in Alabama in 1898 by following the advice of George Washington Carver, fourteen-year-old Jesse struggles to help in his own way.

A fictionalized account of how Spokane Garry, a Spokane Indian chief of the nineteenth-century, became a Christian and led many of his people to Christianity.