Arc The Lad is an anime based on a series of RPGs for PlayStation. In the world described by anime, mankind was protected by guardian spirits of evil elements and lived in harmony with them. The opening theme for the anime series was the "Arc the Lad Main Theme" by Masahiro Andoh. Two ending themes were sung by NiNa: Happy Tomorrow and Rest in Peace.
However, over the years, it ceases to listen to them and starts to follow his own will and destiny. At present, the evil influence back to humanity and the only one able to hear the voice of the ancient spirits and save the human is the warrior known as Arc.