Complex sentence: Unfortunately, Lilo and the rest of the family arrive too late, just as Stitch begins to die, but with Lilo's love for him, Stich regains his life and there is a happy ending.
Split into simpler sentences: Unfortunately, Lilo and the rest of the family arrive too late, just as Stitch begins to die. But with Lilo's love for him, Stich regains his life and there is a happy ending.