The protagonist of the story is Kazuo, a man who has been living with the burden of his brother's debt for years. Despite struggling to make ends meet, he takes on odd jobs to pay off the 30 million yen debt. However, his life takes a dramatic turn when he discovers that he has won the lottery, a whopping 300 million yen.
At first, Kazuo is ecstatic about his newfound wealth and the new opportunities that it brings. He quits his job, pays off his debts, buys a luxurious apartment, and indulges in extravagant purchases. But soon, he realizes that happiness cannot be bought with money alone.
He tries to reconnect with his estranged wife and daughter, but their relationship has been fractured beyond repair. His lavish lifestyle attracts the wrong kind of attention, and he is robbed of his wealth by a group of criminals. In the end, Kazuo learns that true happiness comes from the love and support of family and friends and not from material possessions.
The movie highlights the dangers of wealth and the importance of staying grounded and true to oneself. It also showcases the harsh reality that money can bring, such as greed, loneliness, and envy, and how it can ultimately end up making one miserable.