Shattered: The Sequel to Mirrors

After Dean is killed by the angels, the Winchesters and angels find themselves shattered beyond repair. Castiel is hunting down the angels and anyone who ever hurt Dean, using his new power to destroy what remains of Heaven.
The Winchesters and the other angels meanwhile are grieving in their own ways while trying to find Castiel and stop him. Through all of this, the demons are still pursuing Sam in hopes of using him to summon their king.
Will the Winchesters and the angels be able to pick up the remnants of their lives and protect what remains of their broken family?