Omar, Dylan, Amy and Joey, the first four members of the Revolution team, are searching for the next fragment of Tony Hawk's powerful 900 skateboard in Minneapolis, and their search leads them to a teen who is tuned into the Artifact - but the evil Collective once again stands in their way.

"A prophecy states that the king of Argos will be defeated by his infant grandson Perseus, so the king throws Perseus, and his mother, into the sea. They are rescued by a fisherman, and young Perseus grows up, unaware of his royal birth. Before he can claim his heritage, the hero is ordered to slay a hideous monster named Medusa, whose gaze turns men into solid stone. How can the youth fight an enemy he cannot even look at? He will need the wisdom...