Secret agents Juni and Carmen set out on their most mind-blowing mission yet: to venture inside the virtual reality of a 3-D video game. The game contains awe-inspiring graphics and creatures that come dangerously close to real life. As they face escalating challenges, the Spy Kids must rely on humor, high-tech gadgets and the bonds of family in order to stop a power-hungry villain who is set on controlling the youth of the world.

Exactly one year after a young rock guitarist and his fiancée are brutally murdered by a ruthless gang of criminals, he returns, watched over by a hypnotic crow, to seek revenge.