Tiger's Quest Tiger's Curse Series, Book 2.

Kelsey Hayes's eighteenth summer was crazy. The kind of crazy that nobody would ever believe. Aside from battling immortal sea monkeys and trekking the jungles of India, she fell in love with Ren, a 300-year-old prince. When danger suddenly forces Kelsey on another Indian quest with Ren's bad-boy brother, Kishan, the unlikely duo begins to question their true destiny. Ren's life hangs in the balance -- and so does the truth within Kelsey's hea...