A multi-territory hit in Southeast Asia, Pat Boonnitipat’s comedy-drama observes members of a Bangkok family jostling to be first in line for an inheritance.

It takes only a few strategic bars of tinkly piano score to suggest that the protagonist of How to Make Millions Before Grandma Dies (Lahn Mah) might trade his cynical motivation for selfless devotion before the end credits roll. But the unapologetic sentimentality doesn’t make this bittersweet comedy-drama any less touching or insightful in its observation of spiky family interactions when end-of-life issues and questions of inheritance cause sparks. Thailand’s submission for the international Oscar is the country’s first entry to make it onto the 15-title shortlist.

But what’s perhaps more significant is the perceptiveness and affection with which the screenplay by Thodsapon Thiptinnakorn and Boonnitipat captures a family dynamic that’s complicated and imperfect but grounded in a loving sense of intergenerational duty, even if concerns of personal benefit can get in the way. In the story, that dynamic is very specifically Asian, but the basic plot mechanics are sufficiently universal to resonate anywhere.

Her eldest son Kiang (Sanya Kunakorn) is a financial trader whose wife and daughter chime in via video call, prompting Amah to point out that they never visit her. Her youngest son Soei (Pongsatorn Jongwilas) is a deadbeat with a gambling habit. The middle child is careworn supermarket worker Sew (Sarinrat Thomas), the most dutifully attentive of Mengju’s three children. However, the fact that Sew’s son M (Putthipong Assaratanakul, aka “Billkin”) has dropped out of college with the pipe dream of making money as a videogame streamer seems to reflect badly on Amah’s daughter.

When the old woman expresses her wish to be put to rest in a grand burial plot, the awkward responses suggest that none of her family will be volunteering to foot the substantial bill. While still at the cemetery, Mengju has a fall and is taken to hospital, where an examination reveals that she has stage 4 stomach cancer. The family decides to keep the grim news from her.

Meanwhile, M studies his savvy younger cousin Mui (Tontawan Tantivejakul) as she cares for their wealthy paternal grandfather in the final months of his life and then inherits most of his estate when the old man dies. Mui swiftly sells his house and moves into a modern high-rise apartment, where she sidelines as a sexy nurse on OnlyFans. She advises M to insinuate himself as Amah’s primary carer and get into pole position in her will, telling him he’ll stop noticing the “old person smell” after a while.

Mengju accepts the prognosis with stoical calm and drops her objections when M moves in to take care of her, accompanying her at 5 a.m. each day to her congee stand. Even so, she’s an irascible woman who’s set in her ways and determinedly self-reliant, which makes her prickly during the next weekly family gathering, when even Kiang’s wife Pinn (Duangporn Oapirat) and daughter Rainbow (Himawara Tajiri) make a rare appearance.

It soon becomes apparent that almost everyone hopes to inherit Amah’s house, especially as her condition worsens and chemotherapy fails to produce results. Hard-working Sew (Thomas is the standout of the supporting cast) is the only one who cares for her mother altruistically. She’s more pragmatic than self-pitying when she observes, “Sons inherit money, daughters inherit cancer.”

The patriarchal imbalance and the tendency in traditional Asian families to favor sons — who carry on the family name — over daughters play out effectively both in developments with Mengju’s estate and in the grandmother’s own history.