Cabin revolves around Devaraj, a truck driver from Tamilnadu, who gets involved in an unforeseen incident with a family moving to Kerala.

The destruction of the mangrove forest and the consequences faced by the people living there.

Guru Amma presides over a community of hijras (male to female transgenders) inside a huge palace, with love and severity in equal measure. The apple of her eye is the talented Mukta who is the best dancer among them and also the potential next leader of the community. Mukta adores Guru Amma with all her heart, to the point of worshipping her. One day, a beautiful young girl turns up at their door without any explanation. Awed by her beauty, Amma takes the mysterious girl under her wings and names her Nandini.