Link Sar follows Zimmerman, an elite American alpinist, while he attempts to climb (and survive) one of the world’s most challenging unclimbed peaks, alongside his climbing partners Steve Swenson, Chris Wright, and Mark Richey.
| Actor | Role |
|---|---|
| GGraham ZimmermanGraham Zimmerman | Graham Zimmerman |
| SSteve SwensonSteve Swenson | Steve Swenson |
| CChris WrightChris Wright | Chris Wright |
| MMark RicheyMark Richey | Mark Richey |