Bleach Movie 4: Jigoku-hen
Hell–A place where beings that have committed mortal sins during their lifetime are sent. It is a realm where even Soul Reapers are forbidden to interfere. When a group of vicious Sinners plot to escape from this eternal prison, they discover that Substitute Soul Reaper Ichigo Kurosaki is the key to their freedom.
[Source: VIZ; emended]