"Help me, help me" shouts a man dressed as a pirate, trapped on the first floor of a tower block in Wembley.
Luckily, a fire engine manned by teenagers trained in tackling blazes is on hand to rescue the luckless mariner.
This was the scenario watched by parents of the teenagers, who joined top London Fire Brigade staff and other dignitaries to see a demonstration of the skills learned on the borough's Local Intervention Fire Education (LIFE) programme, which aims to improve the behaviour and self-esteem of schoolchildren.
Brent LIFE reached a milestone on Friday - those taking part were the 50th group to pass the week-long course and all were left enthused by the experience which includes training on ladders, breathing apparatus, hose work and problem-solving activities.
Matthew Gustave, 15, from Scrubs Lane, Harlesden, received a certificate after playing his part in the demonstration.
The Cardinal Hinsley Mathematics and Computing College pupil said: "It really built my confidence up and has given me leadership skills.
"When I came here I knew a few people but now I have lots of new friends and I want to come back for a day or even another week.
"It's been very good for me and things like this keep kids off the streets.
"It's also made me consider being a firefighter as a career."
Proud mum Clover Frith, from Kenton Lane, Harrow, watched her 15-year-old daughter Shamara Robinson complete LIFE.
She said: "She has enjoyed it and I have seen her become more confident as the week went on.
"It's really built up her self-esteem and I'm very proud of her."
Sean Bennett, Brent's new borough commander, hailed the success of Brent LIFE which has been completed by more than 600 teenagers since its inception four years ago.
He said: "The LIFE programme has repeatedly shown that it has a positive effect, not only on those taking part but also on the communities the brigade serves.
"It gives young people an increased awareness of what the brigade does, a real sense of achievement and helps to develop their self-esteem.
"This is a great milestone and testament to the success of the scheme."