"Remaining Warm" tells the story of jewelry designer Wen Yuyan and her ex-husband, business elite Xu Linchuan, who unexpectedly reunited three years after their divorce and struggled between business cooperation and the rekindling of an old relationship. When Yuyan was about to accept a new relationship, Linchuan was diagnosed with a brain tumor, and the two re-examined their misunderstandings and choices while fighting the disease. Facing the test of life and death, they must untie the knots of the past, learn true communication and tolerance, and find a balance between career and love, self-esteem and compromise.