In a quiet resort town Haapsalu four kids are spending their summer holidays together. Suddenly they are dragged into events that started in the 15th century in the local bishop's stronghold. The children must solve a difficult mystery of a clock robbery and they have to find a treasure that has been lost for centuries and contains a formula of making gold.

Estonia, 1872. The uncompromising new owner of Robber's Rise must battle with hard work, his spiteful neighbor and with his own family and beliefs to transform the poor land into a flourishing farm of his dreams.