Power Girl: 1974: Kara’s European Vacation
by Doc Quantum, partially adapted from Action Comics #255 by Otto Binder and Jim Mooney 
Since her arrival on Earth, Kara Zor-L has been frustrated at being kept as Superman’s secret weapon and forced to live in the remote Secret Citadel until she is ready for her public debut as Power Girl. When she is given a secret training mission to cross the ocean to reach Europe, she soon finds the kind of excitement she craves, but also deadly danger! Will a young boy genius with a unique surname be her salvation?