In The Sea of Monsters, Percy Jackson has almost managed to survive an entire school year without getting expelled. On the last day before the summer holidays, however, all hell breaks loose, and the gym ends up burning down because giant monsters are trying to kill him with fireballs. Maybe he can blame it on asbestos, as Buffy Summers tried to do when she arrived at Sunnydale High?
His mother doesn't want him returning to Camp Half-Blood, but he goes anyway, and takes Tyson, a mysterious homeless kid with him. At the camp, he discovers that Chiron has been sent away, and the tree that keeps the camp safe is dying, so everyone there is in danger. It's also revealed that Tyson is not only a mythological being, a cyclops, but that he shares a father with Percy. Percy keeps having dreams where his best friend, the satyr Grover, who went off on a quest at the end of the last book, is in grave danger, and he will die if Percy doesn't come save him. When it turns out that by saving Grover, Percy can also fetch the one thing that will help save the camp, the Golden Fleece, he takes Annabeth and Tyson with him, despite being told he will be risks being banned from the camp forever.
The Sea of Monsters is another fun adventure tale, featuring vicious chariot races, cyclopes, sirens, the Bermuda Triangle, the return of Percy's nemesis Luke, Circe the sorceress and Grover in a wedding dress. It was yet another fun read, and I am looking forward to the next one in the series.