The movie is not a sequel to the anime, but is an adaptation of all the events in the first novel and contains events that were not in the anime series.<br><br>
(Source: Wikipedia)

Episode 1 - The End to Everything, the One Beginning

Episode 2 - The Lit Flame

Episode 3 - The Torch and The Flame Haze

Episode 4 - The Confused Flame Haze

Episode 5 - Respective Thoughts

Episode 6 - Complication. Activation. Confrontation

Episode 7 - The Two Flame Hazes

Episode 8 - The Beautiful Goblet

Episode 9 - The Poolside of Love and Desire

Episode 10 - Entangled Feelings

Episode 11 - Yuuji, Shana and a Kiss

Episode 12 - The Flower that Blooms in the Cradle

Episode 13 - Declaration of War Behind The School

Episode 14 - A Great Person

Episode 15 - The Day the Flame Was Born

Episode 16 - Slaying Hand of Shakugan

Episode 17 - A New Chapter

Episode 18 - Shattered Wish

Episode 19 - Within the Battle

Episode 20 - Heartless Wirhelmina

Episode 21 - Diverging Feelings

Episode 22 - The Flickering Flame

Episode 23 - Battle at the Palace of the Stars

Episode 24 - Crimson Thoughts

J.C.STAFF

Funimation

ASCII Media Works

Hakuhodo DY Music & Pictures

Shakugan no Shana: The Movie