Chris is saved by the Angel of Destiny who tells him that his work isn't finished yet. Chris is brought to New York and given a new identity and a charge. He becomes Neal Caffrey. Elizabeth Burke is a witch whose Whitelighter was killed by a Darklighter arrow. Chris as Neal is her new Whitelighter.
Bonus: Peter knows Elizabeth is a witch and neither of them know Neal is Elizabeth's Whitelighter.
Bonus2: They freak out when the Darklighter who killed Elizabeth's last Whitelighter comes after Neal. Neal gets grazed by the Darklighter arrow and vanquishes the Darklighter.
Bonus3: Phoebe, Paige, Piper and Leo find out Chris is still alive because Chris orbs home to get healed.
Bonus4: The White Collar Team, Peter and Elizabeth eventually finds out that Neal is Elizabeth's Whitelighter. Cue ribbing Neal about being an angel.