Invisible (2020)

Little Jirka is at a new school for the first time and is immediately unlucky. When his classmate Ema's backpack goes missing from the school playground, Jirka is the main suspect. He gets a magic mirror when he gives an unknown woman a snack. Jirka becomes invisible and it is up to him how he uses this ability.

Unfortunately the movie Invisible is not yet available on HBO Max.