Shannon's Rainbow (also listed as Amazing Racer) is a 2009 family film produced and directed by Frank E. Johnson.

They have a stables that works in harness racing and have been bringing along a filly named Rainbow who takes very strongly to Shannon.

Eric and those around him are targets of a spiteful grudge held by the rich Mitchell Prescott who buys the filly for $15,000 in a claiming race she was entered in for experience.

Mitchell runs Rainbow into the ground, having her beaten until nearly dead for the sin of having a mind of her own and an unshakable preference for Shannon, then sells her off to the knackers.

Eric is alerted to this and tracks down the horse van en route to the location where Rainbow is due to be slaughtered and buys her back for $400.