Blast from the Past

During her tour of Switzerland Star meets Sam, who introduces herself and explains that she and Star went to kindergarten together before Star's family moved away. Star doesn't remember Sam, but she loves hearing Sam reminice about Star's parents... Soon the girls are inseperable, but Mike and Mags are suspicious of Star's new friend, and her motives. Is Sam really a blast from Star's past, or is she after something more than fond memories?