I generally find that if you are asking a question where you have an idea about a before and after picture that you should present both sides.
You have given the before but no after (ie what you want the final file to look like).
Also, prior to asking questions you need to identify such things as your exception as there could be more than one so more back & forward may be required.
Assuming no more changes are required, this may work:
Code:
awk 'FILENAME==ARGV[1]{_[$2]=$1}FILENAME==ARGV[2] && $1 in _{print _[$1],$0 > "new_file"}' file1 file2