Zada 5 The Window Splinters

Connor steps through the window to Zada 5, unaware of what has happened behind him. Doing so, he finds himself lost on a familiar planet where nothing is as he had last seen it. There, he discovers friends and family he thought were lost to him in the middle of a new war with once-defeated enemies, and must find a way to help them if he is to find his way back to where he belongs.
With the discovery of Connor lost, Chris frantically tries to understand where he has vanished before it is too late, and he is gone to them for all time. With new and old friends engaged, Chris rallies their help as they set out on a new adventure to discover where their friend has gone.
Meanwhile, Connor is facing another invincible army with almost unbeatable weapons. Using his knowledge of battles once won, all the time questioning if he will ever make it back home. Connor tries to help his newly discovered friends and family as they try to fight back. Will they succeed or lose to overwhelming odds, leaving Connor lost to Chris forever?