My finding here are thus…
The “Realisation Scream” occurs 35 seconds into the trailer.
The “McGuffin” is a turbaned machine called Zoltar that grants his wish at a travelling fairgorund.
The main lessons learnt are that childhood is a precious thing that should be cherished and that it was astoundingly easy to climb the corporate ladder in 1980’s New York.
13 Going On 30
The next is another age swap movie but then again technically is it a time travel film? Frankly who cares. The gist of it is that in 13 Going On 30 Jennifer Garner finds herself at 13 years old wishing she was 30 instead. Lo and behold the next morning she awakes to find herself at 30 years old with no recollection of the intervening years ( I swear that this happened to me in real life but so far no one will believe me ).