Even before Cruz leaves Hawaii for the Explorer Academy there is an attempt to drown or kidnap him. His mother died in a fire at the Academy and he wants to know more. He leaves behind his dear friend Lani who is going to be a bit jealous about his new Academy friend Sailor. At the Academy there are numerous threats to Cruz and it is unclear who are the bad guys and who are the good guys. But what could Cruz have that they want and who is it who wants it? The Explorer Academy The Nebula Secret by Trudi Trueit. And then Cruz gets kicked out of the academy.