Explore the mesmerizing world of whales, the ocean’s majestic rulers, through vivid footage from 20 nations. On this journey, whales show their incredible ability to traverse halfway around the earth and to dive to great depth in a single breath. Yet, amidst their splendor lies a shocking truth about our planet. What is their final call to protect our future?
| Actor | Role |
|---|---|
 Han Ji-minNarrator (voice) | Narrator (voice) |
 Park Hae-sooNarrator (voice) | Narrator (voice) |