Fireworks Lyrics

The child of a maintenance engineer of a sprinkler system company had a very bad car accident he took his kid to hospital where he was told that they couldn't help his child.
The insurance company has a fight the hospital and doesn't reimburse any costs made at the hospital due to a lack of trust and the father didn't have enough money to pay it himself.
The child dies shortly after.
After a while he has to maintain the fire extinguish sprinkler system in the hospital for his job.
He connects the sprinkler system to the gas system instead of the water system. He sets a timer for a sabotaged machine to operated until it overheats to trigger the sprinkler system, leaves the building and watching the fireworks.