The opening scene of Frozen establishes the main character, a boy, as he works with men cutting and transporting ice under the northern lights. The scene shows the hard work and cooperation of the community.
The opening scene of The Princess Diaries introduces Mia as the main character, showing her morning routine as she prepares for school on her scooter, establishing her friendly personality.
The opening scene of The Dark Tower sets up an ominous tone, with shots of children playing that reveal something is not quite right about the environment and characters, hinting at danger or manipulation of the children. Alarms are heard and the children are shown being restrained and experimented on, with technology being used against them.