In the beginning of this ep, we see T.J., Cassie, & Carlos looking for any sign of Zordon. Then T.J. receives a distress signal, which Ecliptor is transmitting to lure the Rangers into an ambush. During the ambush, Darkonda comes in & releases a Barillian bug, which stings Carlos. The bug bite on Carlos looked pretty real. Anyway, Ecliptor proceed to accuse Darkonda of interfering with the ambush. Later on, Andros & T.J. went out to get a Barillian bug & analyze it. Andros says that he had heard of that type of bug before, & mentioned that those who got stung became Barillian bug themselves.
The special effects of Carlos transforming into a Barillian bug seemed somewhat graphic. When Carlos (as Barillian bug) stings Cassie, the sting looked real. As Carlos & T.J. went after the antidote, Ashley must have felt scared having to protect the Astro Megaship from the 2 Rangers who had turned into Barillian bugs, namely Carlos & Cassie. On KO-35, Andros & T.J. find the antidote as Darkonda shows up. T.J. immediately returns to the Astro Megaship with the antidote while Andros took on Darkonda. Back on the Astro Megaship, it seemed as if Ashley was about to shoot them when T.J. returns with the antidote. The 4 Rangers then join Andros. With the Astro Megazord, the Rangers destroy the humanoid Barillian bug which Darkonda released after destroying the last vial of antidote.
At the end of the episode, Andros thinks back to the kidnapping of his sister, Karone. From his flashback, it's pretty clear now that Darkonda was Karone's captor. Meanwhile, Darkonda reveals that Andros is the only true Space Ranger, & that if he was separated from the other 4 Power Rangers, the entire team would fall apart. This sets the scene for a future episode.
Overall, a pretty good episode. I'll give it a 5 out of 5.