Watch I Am Number Four (2011) HD Full Movie Free on SolarMovie. Watch I Am Number Four (2011) online free. Aliens and their Guardians are hiding on Earth from intergalactic bounty hunters. They can only be k...Aliens and their Guardians are hiding on Earth from intergalactic bounty hunters. They can only be killed in numerical order, and Number Four is next on the list. This is his story.