"The fourth book in the adventure series continues the edge-of-your-seat story of the young pioneers who travel to the distant planet Kepler62. In this story, the lush, green planet that they land on is more suitable for life than anyone could have imagined. It's like a paradise compared to the barren earth they left behind. Once the children start building their base camp they find traces of other forms of life. Will they be friendly or hostile? Meanwhile, Ari and Marie are becoming increasingly disillusioned by Olivia's secrecy surrounding the mission. And when Joni falls ill, the children look for help elsewhere-with disastrous results"-- Provided by publisher.