The Hardy Boys are starting their summer vacation and decide to try and make some money over the summer with their friends. After Joe almost gets hit by an absent-minded ferry service provider, they decide to start a ferry service by buying a cheap Chinese junk for sale. The Hardy Boys, but when they attempt to buy it, they discover this is no ordinary junk. A few other people are after this boat for what seems to be a very suspicious reason to the Hardy Boys. Rather intrigued by the potential specialty of this junk, the Hardy Boys begin their investigation and experience quite a few threats along with some twists and turns. This Hardy Boys book adds on to the great collection of mysteries. This story provided a rather peculiar plot but was all the while interesting. The amount of suspenseful build-up and climatic occurrences makes this a great mystery to read and enjoy. I found the whole book unique and interesting.