This story is a sequel to Rise of Char

Smolder has journeyed into the Void, once known as the Kingdom of Naught, to help the mysterious Mira destroy the Dark King Null; host to the Storm that devours all traces of life. Twilight and friends are racing to discover whatever they can about the Void, searching all over Equestria in hopes of bringing Smolder home. Within the land of Naught, Smolder will discover the fate of his mother, learn to wield his unruly magic, and stands against an ancient evil that threatens to bring all of Equestria into eternal darkness.

This story is a sequel to Smoldering It Over

It has only been a few months since Smolder had become King of the Ashen Fields and the pressure of ruling a Kingdom is already getting to him. With the help of Twilight and her friends, they will help rebuild the Ashen Fields, and uncover the lost history of the Flame Ponies. Only to discover that some shadows still linger within Castle Char that threaten the whole of Equestria.