Ali Salem Hamudi Mohamed - Yahdih, was born in 1955 in El Aaiún (Western Sahara). He completed his secondary schooling in the "Spanish" Sahara. A scholarship allowed him to enrol at the Universidad de la Peninsula in 1975, but Morocco's invasion of the Sahara led him to return to the city of his birth and go into exile with his people, participating in the resistance and helping to organise the Tindouf Refugee Camps (Algeria). In 1980, the Polisario Front and the Government of Cuba offered him the opportunity to study Architecture at the University of Havana. On his return to the Camps in 1985 he worked for the SADR's Department of Construction. He designed more than twenty public buildings, including town halls, schools and nursery schools, and also collaborated with international aid organisations to build hospitals and training colleges. All of these buildings were built collectively by the Saharan people. ;In 1999 he emigrated to Spain. His family joined him five years later.

This documentary deals with the great injustice and pain caused by anti-personnel mines and demands the urgent need for all the countries involved to sign the demining protocols. The short begins with a 24-hour isolation carried out by the author in a hole/crater in the middle of the desert to empathy with the Saharawi people, from there progressively through their commitment and coexisting for getting close to the reality of the victims of antipersonnel mines and their everyday live. Denunciations and wishes of this people who have suffered a hard exile are verbalized. In parallel, the author is interviewing, listening, sharing and designing an ingenuity that he is building to exploit the mines. The melphas (costume of the Sahrawi woman) make up the sail that moves the wheels that trace with phosphate powder the path with the word FREE and end up exploiting the mine, to show the inhuman damage it cause. A call for peoples to sign demining protocols urgently.