Watch Monkey King: Hero Is Back (2015) HD Full Movie Free on SolarMovie. Watch Monkey King: Hero Is Back (2015) online free. The all-powerful Monkey King was imprisoned by the Gods for 500 years, but when a child releases him...The all-powerful Monkey King was imprisoned by the Gods for 500 years, but when a child releases him from his curse, the Monkey King must now save an innocent village from the evil Mountain Lord and his monstrous army.