The documentary interviews Nobel Peace Prize winners, diplomats, negotiators and former guerrilla fighters who have dedicated their lives to the task. How did their mediation successes come about and why did they fail? Peacemaking is both art and hard work.
| Actor | Role |
|---|---|
| KKhaled Abu Awwadhimself | himself |
| SSholomo Ben-Amihimself | himself |
| RRicardo Brandaohimself | himself |
| PPablo Catatumbohimself | himself |
| EEliaz Cohenhimself | himself |
| FFatima Gailaniherself | herself |
| WWilliam Gumedehimself | himself |
| FFabienne Haraherself | herself |
| GGamal Helalhimself | himself |
| SSergio Jaramillohimself | himself |
| OOntiretse Magadzihimself | himself |
| SSirlis Yulieth Mejia Villaherself | herself |
| RRoelf Meyerhimself | himself |
| FFederica Mogheriniherself | herself |
| MMzwandile Mthiyanehimself | himself |
| LLotfullah Najafizadahimself | himself |
| NNasser al-Qudwahimself | himself |
 Cyril Ramaphosahimself | himself |
| JJuan Manuel Santoshimself | himself |
| YYasmin Sookaherself | herself |
 Jonas BaeckNarrator | Narrator |