Wet Season tells the story of Malaysia-born Ling (Yann Yann Yeo), who teaches Mandarin at a Singapore high school where her subject is regarded as low priority.
Ling's home life offers scant consolation: for eight years, she and her husband have been trying to conceive a child, and the process has eroded much of the tenderness they once shared.
With her husband increasingly out of the house at all hours, Ling is left on her own to care for her ailing father-in-law.
An unexpected source of alleviation arrives in Ling's friendship with Wei Lun (Jia Ler Koh), the only student in her class to show real interest.
Like Ling, Wei Lun feels neglected at home and, though he participates in competitive Wushu, he seems alienated by kids his own age.
Wei Lun's youthful enthusiasm - accompanied by what appears to be an endearing crush - helps Ling weather a seemingly endless torrent of frustrations and disappointments, but the time will come when even this alliance will reach its inevitable limit.