Wassanaye Sanda (Moon of the Autumn) (Sinhalese: වස්සානයේ සඳ ) is a 2018 Sri Lankan Sinhala romantic drama film directed by Udayakantha Warnasuriya. It follows the story of two young lovers Mihiri & Sandesh and struggles they face.

It's about how a youth named "Rush" find love and to what lengths he goes to keep it. He deceives his lover's family and sacrifice himself for the sake of the girl he loves. When the girl he loves has no clue who he is, and pretends to be the guy that girl's parents hoping to wed their daughter to. But takes a surprising twist at the point of discovery. 'Rush' who pretends to be 'Shan' is confronted by 'Shan' and hell breaks out. Pooja, the woman of his dreams is torn between her feelings for Rush and finding the truth. As she unravels the truth, she is challenged to face great grief and come to terms of what love can do to a person.

Dhammi is a mischievous schoolgirl, Sugath a shy and introverted boy new in school. Dhammi is immediately attracted to him and they become friends. The friendship eventually develops in to a special relationship, but when Sugath reveals his love for her she shuns him.

The story follows Bonny Mahaththaya (Gamini Fonseka), a wealthy and hedonistic landowner who lives a life of wine and pleasure. His world is challenged by his unrequited love for Kamala (Punya Heendeniya), who instead loves a humble worker named Sirisena (Joe Abeywickrama).

Cyril (Tony Ranasinghe) is dissatisfied with his introverted fiancée Sujatha (Punya Heendeniya). He starts a relationship with the outgoing Sarojini (Anula Karunatilleke) and gets her pregnant. Sujatha meanwhile is fascinated by a wandering Buddhist nun. Due to the pregnancy, Cyril breaks off the engagement having no intention to marry Sarojini. Till the birth of the child he supports her and then leaves her for an older rich woman. Sarojini is distraught and contemplates suicide. Sujatha by this time is planning to become a nun.