Tintin went to the Moon, Herge's other characters Jo, Zette and Jocko have to settle with the slightly less distant New York but its an epic journey none the same. At the end of part one the two children and their pet chimp were flying off in the experimental high-speed aircraft Stratoship H.22 - built to win a flying competition - to evade competitors bent on stopping them no matter the cost. In this concluding part of the story they end up first on a desert island and then in the Arctic.
Like the earlier volume the adventure runs at break neck speed with a heavy dose of luck and coincidence. The limitation of Jo and Zette of course was they were children not an enterprising adult like Tintin thus a lot of the time their fate is not in their hands but in adults who handily are around to save them at every turn. This does not detract too much from the story however. The plot is engaging and involves some intrigue, i think this is probably the best of the three Jo, Zette and Jocko volumes i have read to date.
It is beautifully drawn like part one, some of the best examples of ligne claire artwork i've seen and beautifully reproduced.