Jack convinces Tim to go on a covert mission, while Amy trains a horse with a big race coming up.
Tim reveals to the family that Shane is his son which threatens to ruin the naming ceremony for Lou's baby girl.
Amy works with a chuck wagon horse, which may put the team in jeopardy, meanwhile Caleb returns without Ashley.
Amy helps restore the confidence of a young trick rider and Caleb pines over Ashley and accidentally meets someone new.
