A depressed musician reunites with his lover. However, their romance, already played over several centuries, is disrupted by the arrival of her uncontrollable younger sister.
Flo and his trusted Collie pal Lassie spend the summer at Aunt Cosma's, alongside her foster children Kleo and Henry, and her dog Pippa. When local canines start disappearing, including Pippa, Lassie rallies the kids to solve the mystery.
