George Bailey has been given a gift: the chance to live his life again. After suffering a heart attack at the age of 42, George is given the heart of a 19-year-old - and suddenly everything changes. He is a friend to his teenage son and daughter, he makes love to his wife all night long. Suddenly he wants to change the world. But George Bailey discovers that being young again is not all it is cracked up to be - and what he actually wants is to have his old life back.