Winter is still in full swing. Guy, Noam and Roy recently returned from Berlin, and after the scary and dangerous events they experienced there, they are happy to return to their normal lives in Tel Aviv - studies, exams, parties. One phone call from Hanan Shomaroni, the Mossad man, changes everything. In Cairo, the capital of Egypt, a new organization has arisen that threatens the peace of the world. The institution needs the children's help, and this time it is officially recruiting them for the activity. The children are enthusiastic about their professional status and the secret operation that awaits them in the heart of the largest capital in the Middle East, but are shocked to discover the bad news: Hanan decided to join them with Ofir, the boy who hated them since the days of the operation in Manhattan. Ofir succeeds in disrupting the balance between the three, and threatens not only their friendship but also the entire operation. Operation Cairo is the third book in the successful Secret Mission series, which captured the hearts of readers and critics alike.
