A story told in verse, Teething begins when Kochu, a young boy in Kerala, is caught kissing the neighbour's son. All hell breaks loose, ending in Kochu taking his own life.

Years after the scandal, after discovering his suicide note, his oldest sister, Achu, sets out to uncover the mysteries of their dysfunctional family by putting pieces of their past back together. Along the way, she discovers things she never noticed - their mother's brokenness and obsession with the church, their father's disturbing secrecy inside the bedroom, and, of course, their own individual traumas that stopped time altogether. Soon, Achu realizes that none of them will ever truly grow up until they live their lives all over again, from the very beginning.