The place I want to go to - S1.E3

A policeman, Cooks, visits a family where one of the Children used to live, in an attempt to find out what's going on. Helga and Chit are recaptured on the mainland and sent back to Chikao, which please neither of them - especially since Chit is getting sent to another orphanage. A crazed speedboat driver (the man from the first episode with the cryptic ramblings) crashes into the boat carrying Chit, however, and Thoma happens to be on hand to rescue him, so they set out together to rescue Helga once more.