The now 50 year old Scientific Boys Club decides to build a ship with which they plan to sail to Mars on the "Ethereal Current", curious to see if there is life on Mars.
Increasingly disturbed by the dark energies building within him, Ryu is confronted by Shun, a boy claiming to be the brother he never knew. But before Ryu can consider whether Shun's timely appearance might be more than coincidental, Shun is kidnapped by Shadowlaw. To recover Shun, Ryu must undertake the ultimate journey of self-discovery and learn to control the power threatening to consume him.