Young Albert enlists to serve in World War I after his beloved horse is sold to the cavalry. Albert's hopeful journey takes him out of England and to the front lines as the war rages on.

The story takes place in rural England, where a young man named Albert (Jeremy Irvine) forms a deep bond with a thoroughbred horse named Joey. However, when World War I breaks out, Joey is sold to the army and sent to the front lines. The film follows Joey's journey as he passes through different owners and experiences the horrors of war.

The film is a powerful and emotional tale of loyalty, courage, and sacrifice. It depicts the human cost of war and the deep connections that can be formed between animals and humans.