The Holiday Adventure Club is ready to take on Edinburgh for Easter. They land in Scotland at the crossroads of the Edinburgh Science Festival and a Comic Con event, and find themselves sandwiched between scientists and superheroes as they wander the historic streets of Edinburgh.Lucy's got her hands full this time as she shepherds a trio of girls about to graduate from high school, a man who truly believes he is a superhero, and a couple who've come to Scotland as a last-ditch attempt to save their floundering marriage.But she's got her own problems to deal with: her mom is in need of more care than Lucy can give at a distance, and her budding relationship with her next-door work neighbor has hit a snag. Can she juggle her personal life with the dynamics of a new group of people?