"Amazing Grace" tells the life story of antislavery pioneer William Wilberforce, played by Ioan Gruffudd who, as a Member of Parliament, navigated the world of 18th Century backroom politics to end the slave trade in the British Empire. Elected to the House of Commons at the age of 21, and on his way to a successful political career, Wilberforce, over the course of two decades, took on the English establishment and persuaded those in power to end the inhumane trade of slavery.