The 2021 heat dome killed more people than any other natural disaster in Canada. In a world struggling with more frequent heat waves, this film investigates the delicate balance between the life saving use of air conditioning to stay cool and the environmental risks associated with its overuse. Researchers focused on the impact of rising temperatures on heart health explore the challenge of keeping cool without succumbing to the dangers of overheating. This documentary prompts viewers to consider the broader implications of our reliance on air conditioning, and offers cool solutions in an increasingly warming world.