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(Book 1)
During the battle of Manhatten an accident occurred. It caused Percy Jackson to travel back into the past.

He woke up in his old bed in Yancy Academy and found out that he traveled back in time. He figured that this was his chance to save everyone he couldn't the first time. He could stop many of his friends death and have a huge advantage in his fight against Kronos in the future.

He has to keep this a secret from everyone or else face the consequences.

If Kronos figured out that he's from the future, he would stop at nothing to stop him.

Will percy succeed in his mission? Or will he fail and cause the end of the world. Read and find out.