Final four episodes from the first season of the 'Ben 10' spin-off series. Five years have passed since Ben last wore the Omnitrix. But when Grandpa Max goes missing, it is up to Ben (now 15 years old), Gwen and Kevin to enlist the help of new half-alien allies and stop a secret Highbreed invasion. Episodes are: 'What Are Little Girls Made Of?', 'Plumber's Helpers', 'Paradox' and 'X Equals Ben Plus 2'.