An invisible trail is moving through school. Can the Healthy Habits Club follow it without spreading fear?

When a safe science demonstration makes hidden hand-to-surface pathways glow, Aarav, Meera, Kabir and Tara become Germ Detectives. Their investigation takes them through classrooms, lunchboxes, sports practice, bathrooms, an animal-care corner and a crowded school fair. But the hardest thing to stop is not a microbe - it is a harmful rumour.

Through a fast-moving mystery and twelve practical missions, young readers explore handwashing, cough care, food safety, personal items, clean facilities, animal contact, trustworthy information and compassionate support for people who are unwell. The story avoids fear, blame, body shame and medical claims.