"The four bears have reached the mountains where Toklo spent his cubhood--but they soon discover that the home Toklo has returned to is nothing like the one he remembered"--

As the four bears head toward warmer territories, polar bears Kallik and Yakone wonder if they've made a mistake leaving their natural home, while Toklo, desperate to leave the struggles of their journey behind, thinks about leaving the group and starting a new life on his own.

"Toklo, Kallik, Lusa, and Yakone trek onward toward the Melting Sea, the site of Kallik's traumatic cubhood--and prepare to be separated for the first time since their journey began"--