This episode centered around the relationship between Optimus, Sentinel and Elita-1, now Blackarachnia. In another attempt to purge her organic half, Blackarachnia enlisted the Dinobots to abduct Wasp and take him to the island to conduct transwarp experiments.
The Autobots with the assistance of Jetstorm and Sentinel Prime had Wasp cornered when Swoop flew in and abducted Wasp. Compelled to be the bot to capture Wasp, Sentinel ordered Jetstorm and Jetfire to follow Swoop to Dinobot Island. Optimus knew what awaited and tried to warn the bots but Sentinel being the brash, arrogant bot switched off all communication. Once they got to the island, Sentinel ordered the twins to create a diversion to distract the Dinobots while he nabs Wasp. Little did he know, the bot that was conducting experiments was Elita-1, now known as Blackarachnia. Sentinel was disgusted by her organic half and insisted that she had stayed offline. Ultimately, she got the drop on Sentinel and paralyzed him with her venom as the rest of the Autobots arrived. As such, the transwarp energy became unstable and transformed Wasp into a part organic abomination called Waspinator. Quick to learn that he was used as a guinea pig, he sought revenge but Blackarachnia used her web to enclose them both as his transwarp field went critical and exploded not leaving a trace of either bot.
Afterwards, Sentinel, being the apparent successor to Ultra Magnus needed to take his crew back to Cybertron to flush out the traitor, Shockwave. Before his departure, he and Optimus shared heartfelt apologies in regard to leaving Elita-1 behind and venturing to the organic planet responsible for her demise. The end of this episode saw Waspinator in an undisclosed location in pieces putting himself back together and vowing revenge. Blackarachnia stared up at various animals that foreshadowed the Predacons.
Overall, this was another compelling episode that this time showed a somewhat tender side to the hard-nosed Sentinel Prime. Hopefully, this show will continue to pump out quality, entertaining episodes that pay homage to the original G1 Transformers.