Theo and Marlen on a Great Voyage (vol. 3)

Marlen has never been to the seaside. But the river in their city must flow into it! And all life comes from the sea, Marlen knows. So she and Theo build a raft. They have a rope, a pocketknife, and sandwiches with them. You always need sandwiches. The idea with the raft doesn’t work out, so they take a river steamer. And in the end, they really do wind up at the sea…