Reunited with Lancelot for the first time since their tragic accident, Tristan must learn to conquer his inner demons in order to save his mother's life.

When sinister forces threaten the peace of Britannia, a young prince embarks on a perilous journey to save his loved ones and discover his true powers.

The Seven Deadly Sins aid the Sky People against a powerful group of demons hellbent on resurrecting a demonic beast sealed over 3,000 years ago.