Moopah, the youngest son of the Hedcharoendee family, bears great responsibilities of inheriting his father’s mushroom business and taking care of his two weird older half siblings, who have moved to Thailand since their mothers died. One is half Thai and half Mexican, while the other is half Thai and half English. Moopah hates mushrooms so much that he makes a deal with his father for his freedom: making 10 million baht before he turns 25 years old. However, he was just born to “fail”. Will he be able to succeed this time? Meanwhile, no one knows that the arrival of Lingzhi, another sister from China, will reveal their family’s top secret and mess up Moopah’s life even more.