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While on school camp, Eva, Jacky and Thomas decide to go to the address of the letter and find out who the mysterious Mr. van Pasen is. Because it's a bit far they decide to take the bus.
When they arrive in Veenendaal, they start asking around for the the address, because they have no clue where it is.
Eventually they find the address and Jacky is chosen as the lucky one to ring the bell.