The morning sun was already hot on my neck, and I was running as fast as my eight-year-old legs could carry me. My name is Ethan Miller, and I was in big trouble. My teacher, Mrs. Thompson, had looked me straight in the eye the day before and said, ‘Ethan, if you are tardy one more time, I will have no choice but to call your parents and schedule a conference.’ The memory of her stern voice made my stomach clench. I could not be late today. I just couldn’t.

So I ran. I dashed out of my house that morning with my shoelaces only half-tied and my peanut butter sandwich clutched in my hand. My mom, Sarah, had shouted something about my lunchbox, but I was already halfway down Maple Street. Our house in Springfield, Illinois, was only a few blocks from Lincoln Elementary, but I often took a shortcut through the parking lot of the Save-A-Lot grocery store on Fourth Street. It saved a good three minutes, and this morning, three minutes was the difference between freedom and disaster.

The parking lot was mostly empty, the asphalt shimmering with heat. It was only nine o’clock in the morning, but the summer sun was already brutal. My backpack pounded against my spine with every step. I could feel a bead of sweat trickle down my temple. I just had to get to class before the second bell. I glanced at my watch—two minutes left. I was going to make it. I was going to…

And then I saw it.

A silver sedan, parked directly in the center of the lot, glinting under the sun. At first, I didn’t think anything of it. But as I got closer, a tiny movement inside caught my eye. I slowed down, my heart still racing from the sprint. I looked through the rear window, and my whole world stopped.

There was a baby inside.

A baby, alone in a car seat, its little face as red as a tomato, its mouth open in a silent, exhausted cry. Tears had dried on its cheeks, leaving salty trails. Its tiny chest was heaving, and its forehead was slick with sweat. The windows were all the way up. The car was sealed tight like an oven. I could feel the heat radiating off the glass just standing next to it. I knew, right then, that the baby was in terrible danger.

I pressed my face to the window and tapped on the glass. ‘Hello?’ I yelled, my voice cracking. ‘Is anybody here? Your baby is in the car!’ Nothing. Not a soul. I spun around, scanning the lot. The Save-A-Lot store was about a hundred feet away, its automatic doors gliding open and shut for shoppers who were too busy to notice a little boy and a dying baby. I tugged on the driver’s door handle. Locked. The back door. Locked. The other side. Locked. Every door was locked. The baby’s whimpering was getting quieter, and that terrified me more than any screaming ever could.

I thought about running into the store, but I was only eight. What would I even say? By the time I found someone, it might be too late. Every second the baby sat in that hot car, its body was cooking. I remembered a safety video we watched in school about never leaving pets or kids in cars. The police officer said that on a 90-degree day, the inside of a car can reach 130 degrees in ten minutes. The baby had been in there much longer than that, I was sure of it. I had to do something. I had to act.

My eyes fell on a landscaping rock near the curb, a heavy, gray chunk of granite about the size of a football. I picked it up. It was so heavy my arms shook just holding it. I looked at the baby, its eyelids fluttering. I looked at the car window. I knew breaking a car window was a crime. I could get in huge trouble. My mom and dad would be so disappointed. But if I didn’t break that window, that baby might die. There was no choice. Not really.

I whispered to the car, ‘I’m so sorry, Mister Car, but I have to save the baby.’ Then I lifted the rock as high as I could, and with every ounce of strength in my small body, I slammed it against the rear passenger window.

The glass didn’t shatter right away. It just cracked, a web of white lines spreading from the impact point. I hit it again, grunting with the effort.