Portents of the Future

This is a take of a Knight, a Fae, a Ward and a King. Harry, the ward of King Albus, is sent to his death at the hands of a water sprite named Voldemort, who lived in the river Irwell, which flowed through Sir Severus' holdings. Will Severus be able to stop this death from occurring?Why was Albus forced to order this heinous deed? Why was Harry willing to comply? AR/AU HP/SS