Faraway on the planet Xona, twelve-year old Khali has just witnessed the disappearance of his father. During a mission to investigate a strange source of light emanating from a cave, his father ran out of oxygen and time. Khali is traumatised. All he has left is the birthday gift his father gave him, a stone tablet with a puzzle on its surface. This he must solve. Now back on his home planet, Khali is drawn by the same light in the cave that mesmerised his father. With the help of some unusual new friends and alien creatures, he seeks to embark on a covert mission to return to Xona.
