Our son's Make-A-Wish flight was halfway to Disneyland when the captain said his name over the speakers. Then he said there was one thing about the trip that we did not know.

PART 1 — TWELVE-A

Mike was seven when they told us, and eight by the time we had stopped pretending we had misheard.

I am not going to write about the treatment. That is his and there is nothing in it that anybody needs from me.

What I will write is that hospital replaced everything. Birthday parties, football, the swimming on a Saturday. All of it went, over about four months, without any single day where we decided it was going.

Then one afternoon a Make-A-Wish volunteer called Perrin sat down on the chair beside his bed and asked him what his biggest dream was.

And Mike did not think about it for even a second.

He said, "I've always wanted to go to Disneyland."

Five weeks later we were on an aeroplane.

He had his face against that window from the moment we sat down. He waved at the men on the ground with the sticks. He asked one of the stewardesses about eleven questions about how a wing works and she answered every one of them properly.

For the first time since the February he was not a sick boy in a room.

He was an eight-year-old going to Disneyland, and he was unbearable about it, and it was the best two hours of my life.

Kira had hold of my hand across the aisle seat and neither of us said anything, because if either of us had started we would not have stopped.

About halfway the intercom came on.

I did not look up. You do not look up for the intercom.

Then I heard my son's name.

"Mike, our special guest in twelve-A. Enjoying the trip so far?"

The whole cabin went quiet.

Mike's head came round and he looked at his mother and then at me, and his eyes were enormous, because he could not work out how the pilot knew who he was.

Kira said, "How does he know you?"

And the captain said:

"Before we land, there's one thing about this trip your parents don't know."

PART 2 — THE ENVELOPE

I have to go back to the November, because I need you to understand what was actually at stake on that aeroplane, and it was not a theme park.

There was a family lunch at Kira's parents'. About twenty-five people, her aunt's seventieth.

Kira's sister had gone round with an envelope beforehand without telling us. People had put money in. It was about six hundred dollars and it was meant kindly and I want that on the record.

Kira had it in her hand at the end of the table and she was trying to say thank you, and she had got about four words out.

And her brother Roderic came down that table and took the envelope out of her hand.

He did not snatch it. He took it, folded it, and put it down by his own plate with his hand on it.

And he said, to twenty-five people:

"Give me that. They don't need a whip-round, they need him to get a job. Sit down, everyone's had enough of this."

There was a noise. Not laughter. Worse — agreement. Somebody said something about how you cannot keep going on like this forever.

Twenty-five people. Kira's mother two seats away. Her aunt, on her own seventieth.

Nobody said one word.

And I sat there and did not say anything either, because he was not entirely wrong and because I had been thinking a version of the same sentence about myself for about four months.

I was a line engineer at the Ardmore base for eleven years.

From the February I took unpaid leave in blocks, because the treatment cycle is what it is and because Kira had the other two and somebody had to be in that room.

Eleven months of that. And in the October my post went in a restructure.

That is the correct word for it and I am not going to use a different one. There were four posts and there are now two and the process was run properly.

But I know what happened, and so does everybody at that base.

PART 3 — WHAT HE ASKED FOR FIRST

Here is the thing we did not find out until that aeroplane.

Disneyland was not the first thing my son said.

When Perrin sat down beside that bed and asked him, Mike asked whether his wish could be for his dad to get his job back.

He was eight. He had worked out, on his own, in a hospital, what the thing in our house actually was.

And Perrin — who was twenty-six and doing her fourth wish and who I have since met three times — had to tell him, gently, that a wish has to be something for him.

And he thought about it and said Disneyland.

She wrote the first one down anyway.

Not in the wish. In the notes, in the free text box at the bottom of the form, because she said afterward that she could not think of anywhere else to put it and could not make herself throw it away.

That form goes to the charity. The charity goes to the airline that donates the seats.

And somebody in crewing at Ardmore read a surname on a manifest in the April and put it together with a surname they knew.

PART 4 — WHAT WAS ON THAT AEROPLANE

The captain came out about ten minutes after the announcement, which you can do at cruise.

He crouched down in the aisle by row twelve, the way crew do.

And he said to my son, "We've got a letter for you and we're not allowed to give it to you till we land, so you'll have to hold it."

Then he gave Mike an envelope and told him it was extremely important and that he was in charge of it, which is the single cleverest thing anybody has ever done with that child.

Mike held that envelope for two hours and eleven minutes with both hands.

At the gate, when we came off, there were nine people waiting on the airbridge.

Not a crowd and nothing organised for a camera. Nine men and women in high-vis with the base logo on it, at the end of a bridge at half eleven at night, because they had swapped shifts to be there.

Two of them I had worked next to for a decade.

And Theo Brandt, who is the engineering manager at Ardmore and who signed the letter in the October, was at the front of it, and he took his cap off, which I have never seen that man do.

The letter is not a job offer. I want to be accurate about that.

It is a letter confirming that a post had been created on the night maintenance line at Ardmore, that the post was mine if I wanted it, that the hours were built around a treatment calendar that somebody had actually obtained and read, and that the offer had no expiry date on it.

No expiry date. That is the line.

Theo Brandt has since told me that he had been trying to get that past two levels of his own management since the December and that the wish form was what finally did it, because it turned a staffing problem into a thing nobody in that building could say no to out loud.

PART 5 — NO EXPIRY DATE

We did the four days. All of it. He met the characters and he was sick twice and he did not care about either.

I started on the night line in the June.

Eleven months on, I am still there. The hours are still built round the calendar and they are re-done every eight weeks by a woman in crewing called Nessa who has never met us.

Roderic wrote to me in the September. It is one page and it is a real apology and I have not answered it, and I am going to, and I have been going to for about seven months.

Kira has forgiven him. She says it faster than I do.

Mike is nine.

I am not going to write the end of this, because it has not happened, and because if I wrote a version of it here I would be writing it for the benefit of people who are not in it.

He is nine and he is at home and he is difficult about vegetables and he still has that envelope.

Not the letter — the letter is in a drawer with the documents.

The envelope. Creased to nothing, with both his thumbprints still on the front of it from holding it for two hours and eleven minutes.

They don't need a whip-round, they need him to get a job.

Roderic said that at a table of twenty-five people about a man who had been in a hospital room for eleven months, and several of them agreed with him, and his own mother did not say anything.

He was right that we did not need six hundred dollars.

And five months later an eight-year-old, lying in that same hospital, was offered anything in the world and asked for the one thing his uncle had said out loud at that table.

He was told it was not allowed.