A branch off of another fanfiction by Bookdancer called Two People are Better than One. Read that one before reading this one or you won't get it. But Alex and Joe (age 6) were captured by Scorpia and K-unit helped them escape. I suck at summaries. Rated T for some violence.
Alex Rider and Joe Hardy are both captured by Scorpia, but circumstances soon lead to their escape... and then - wait, can't ruin the plot line. But with one of their lives on the line, will the other be able to bring help quickly enough... or will they die? K-Unit included. mini!Joe. protective!Alex. Brotherly friendship between the two.
Two of the world's top secret government agencies, the Network and MI6, have decided to work together and team up their three teenage recruits. The only problem? Alan Blunt and Arthur E. Gray hate each other.
Frank and Joe Hardy are among ATAC's best, but their latest case requires something more than snooping. When no one else is good enough, ATAC turns to the CIA, who know just the man, or, more accurately, boy for the job. Hardy Boys, meet Alex Rider