What a wasted opportunity to let Ed Asner's wonderful character from Up shine again.
Instead of showing us some more of the heart of this wonderful character in the hands of a talented actor in his last film role we get a barely anything story that manages to damage the glow of the original film, in that it shows Carl moving on from his lifelong devotion to his beloved wife of his entire life, for no apparent real reason. There is nothing in the original film to suggest Carl has any interest in ever giving his attention to anyone else and that was one of the core moments of beauty to it, true undying love.
I don't know what this short film thought it was doing but of all the things they could have used Asner for, this slight and unnecessary film was not a worthy full stop to a wonderful legacy.