七对家庭成员被带到加拿大不列颠哥伦比亚省的荒野中，他们被分开并分别放置在数英里远的地方。每个参赛者必须独自面对艰难的自然环境，寻找自己的伙伴，并在极限的生存考验中彼此依赖与支持。随着时间的推移，参赛者们不仅要面对恶劣的气候和野生动物威胁，还要解决人际关系中的各种挑战。谁能够在恶劣的环境中保持冷静、克服困难，最终成功找到自己的伙伴并坚持到最后，赢得挑战大奖？

　　As "Alone" enters its fourth season, the competition series shakes things up with a new twist: the contestants are dropped off in a remote location as pairs. Seven pairs of family members travel to a rugged region of British Columbia, where they are separated and dropped off miles apart from each other. Each player must navigate the wilderness to locate his or her partner. Once reunited, the loved ones have to create their own shelters and forage for their food while overcoming rough weather conditions and deadly predators. They have nothing more than the contents of their small backpacks and 10 tools split between them to help with their survival. They also have enough camera gear to record their experiences because -- as in the past -- there is no camera crew. The last duo standing at the end of the season is declared the winner and takes home the $500,000 grand prize.