An expedition to the mountain of the three caves - overnight! The children think it's a great idea from their grandfather. But the parents mustn't know anything about it, because parents only worry. Everything almost went well, but then the grandfather falls. And so, a small mountain hike turns into an exciting adventure with wolves and poachers. This time, they don't make it to the third cave at the top. But on their second attempt, they will succeed! However, they discover an abandoned tent, a map, and a smuggler's hideout. Once again, the trip turns into an adventure - and now it gets dangerous, with crooks, police officers, helicopters, and a bear of a bear.