"Sir, where is the air-ticket office?"
"You two kids came to buy air-tickets? Are you gonna travel somewhere?"
"Nope. We just what to go up to the Joy Bridge."
"The Joy Bridge?"
……
Of the two children at the airport to buy air-tickets, one is 7 and the other is 8. Beyond their wildest imaginings, after they ran away, their parents were called by some crooks who demanded a ransom to get them back! And of course, nobody knows the location of the Joy Bridge that the two children intend to go see.