“Flora & Ulysses” is an adaptation of a 2013 children’s book written by Kate DiCamillo (“Because of Winn-Dixie,” “The Tale of Despereaux”), and fans of the novel have an advantage when it comes the movie. They already know there’s more to the material than just the adventures of a superhero squirrel, an element of the plot Disney has emphasized in their marketing materials. Indeed, there’s a creature who can communicate with humans and fly to a certain degree, but “Flora & Ulysses” is primarily about family issues, including parental loss and marital messiness. There’s emotional weight to the film that keeps it from becoming a comic book-style romp, though screenwriter Brad Copeland (“Ferdinand,” “Spies in Disguise”) does a comfortable job balancing the light and dark of the story, keeping the feature approachable as it explores areas of drama unrelated to the communication failures of a super rodent. Read the rest at Blu-ray.com