It shares the soulful and surprising story of one devoted dog who finds the meaning of his own existence through the lives of the humans he teaches to laugh and love.

Charlie Watson discovers and repairs an old Volkswagen Beetle as a way to remember her father and stake her independence from a stepfather she abhors, with only the music of The Smiths and the unrequited crush of the boy-next-door for friends. When she discovers the VW Bug is actually an alien robot on a reconnaissance mission for the rest of his race, the two form a bond which eventually has her putting her life on the line against evil alien robots,...