Double Duty
The team stay on a jungle planet, cut off by Nephestis who has framed Gus as a traitor. The local Thorn aliens are dying of a disease which Gus believes he left there on a previous expedition. The others choose to head out with the Ancient chrysalis but are ambushed by the Tlak'khan but escape...as the chrysalis hatches and the winged Ancient escapes. The Tlak'khan leader De'kyll takes the Thorn village hostage and Bonner surrenders but the Ancient intervenes and the cadets take them prisoner (except De'kyll escapes). The Ancient learns English through Seattle and asks the team for help, and after being named Draga. Draga heals the ailing Thorn but knows nothing about the Stargates and remains with the team.
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S1 E1
Decision
A group of trainees and their leader, veteran gate traveller Gus Bonner, must help an alien named Draga, who is being pursued by both alien forces and bounty hunters from Earth, get back to her homeworld.
S1 E3
The Best World
The team arrives with a planet with a mysterious ""Guide"" stone which is immediately endangered by an earthquake. The team helps the natives, the Mou'a'dash, to recover it. While Harrison deals with being ""owned"" by a local native that rescued him, the Tlak'khan launch an attack. Gus, Draaga, and Seattle get captured and taken through the Stargate along with the Guide, which they use to travel to the Ancients' home planet. They end up in a hellworld trap set by the Ancients, where the Stargate has no controls and they are stuck. Draga manages to use her powers to open the Stargate, leaving the Tlak'khan stranded. Gus realizes the Tlak'khan must have access to his travel record through the traitor and heads off to a planet he hasn't been on before.
S1 E4
Coming Home
When the younger team members reminesce about birthday's, Ec'co thinks back to his own torn life. The team convinces Gus to take Ec'co to his homeworld. An electrical storm shorts out their Stargate while Gus and Ec'co get taken into custody by the hostile Hrathi, who know of Gus' alleged betrayal. The rest of the team rig a way to recharge the Stargate using lightning while the Tlak'khan launch an attack on the Hrathi. Gus helps to drive them off and then are taken to a cache of data crystals. It turns out the crystals are a fake, but one of the Hrathi reveals he is a shapeshifter. Gus and Ec'co pass the test and receive the real Tlak'khan data crystal they need.
S1 E5
Mentor
The team intervenes on a planet when one group of the locals, the Mystari, use high-tech weapons to attack another faction – they meet up with Shepherd, a former Stargate team member who trained Gus. Shepherd claims the faction his men attacked are bandits but his followers worship him. Gus overlooks his apparent abuse until Stacey brings him around. Knowing Gus will act against him, Shepherd summons the Tlak'khan but when he finds out they plan to kill the team he and the locals side with Gus. Shepherd tells the Mystari to find their own way and then takes off on his own.