At the mansion of two bachelor brothers—Pokrak and Pokorn—chaos erupts when their sister, the head of the family business “Pitak Muanchon,” dies suddenly in a car accident. She leaves behind three young children and a heap of business problems, all falling on Pokrak’s shoulders.

On the first day the three kids move into the mansion, they turn the quiet bachelor pad into a whirlwind of laughter and mayhem. Despite the chaos, they bring warmth into Pokrak’s stressful life, already burdened by “The Giant Squid,” a ruthless mafia boss trying to take over the Pitak Muanchon empire. He sends his goons to harass Pokrak and pressure him into selling shares for cheap.

Meanwhile, Pokrak has another younger brother—Pokpong—the son of a mistress, who was kicked out after their mother died. He put himself through trade school and now works as a freelance motorcycle taxi driver. Unbeknownst to Pokrak, the brother he’s been searching for is actually stationed right at the end of his own street.