The Phoenix Glove (Book Two in the Through the Portal Trilogy)
After being forced to flee to the zombie-infested world of Kelados, Jem and the other Callistonians are desperate to reclaim their home world. The only way they can do that, however, is by ridding Kelados of the zombies. This task seems nearly impossible to Jem, but there is one glimmer of hope. The Phoenix Glove, an ancient, powerful weapon, could be the key to saving both Kelados and Callisto.