After the neighborhood bullies are chased away, Sommai's son collapses and starts having some sort of seizure. A local doctor is ill-equipped to treat the boy and recommends he be looked after at home. Sommai has a problem, being a single father, and needing to work, he must find someone else to look after the boy. He asks his vain, selfish ex-wife, who left Sommai after he lost his leg. She refuses. But Nid, the younger sister of his ex-wife, readily agrees. The two, with the boy, then bond as family unit.