Watch Percy Jackson: Sea of Monsters (2013) HD Full Movie Free on SolarMovie. Watch Percy Jackson: Sea of Monsters (2013) online free. In order to restore their dying safe haven, the son of Poseidon and his friends embark on a quest to...In order to restore their dying safe haven, the son of Poseidon and his friends embark on a quest to the Sea of Monsters, to find the mythical Golden Fleece, all the while trying to stop an ancient evil from rising.