She-Ra: Princess of Power Season 2 Episode 5 Something Old, Something New

After the events of the last episode, Adora is still questioning her loyalty to the Horde and her connection to her former best friend, Catra. She confides in her teammates, Glimmer and Bow, who encourage her to focus on their next mission: finding the Ancient First Ones' Archive, which is rumored to hold valuable information that could help them defeat the Horde.

The trio sets out on their mission, but things quickly go awry when they discover that the Archive is guarded by a powerful magic spell. They manage to break through the barrier, but in doing so, they accidentally awaken an ancient, sentient robot warrior named Al. Al is initially hostile towards the team, but they quickly earn its trust when they explain their intentions and their fight against the Horde.

Al offers to help the team find what they are looking for, but in return, they must help it complete its final mission: unearthing an even older robot called the Mechatect that has been buried deep underground for millennia. The Mechatect is said to have god-like powers, and Al believes that it is the key to stopping the Horde once and for all.

The team agrees to help Al, and they set out on a dangerous quest to uncover the Mechatect. Along the way, they face many challenges, including dark underground tunnels, treacherous booby traps, and an army of Horde soldiers who are hot on their trail. Despite the odds, they manage to reach the Mechatect's resting place, but they quickly discover that getting to it is easier said than done.

The Mechatect is guarded by a complex web of ancient magic spells, and the team must work together to decipher the runes and unlock the barrier. They are aided by the ghost of an ancient wizard who once served the First Ones, and they are eventually able to break through the barrier and awaken the Mechatect.

At first, the Mechatect is unresponsive, and the team begins to lose hope. However, when they mention the Horde and their quest to save Etheria, the Mechatect comes to life. It reveals that it was created by the First Ones as a last resort weapon to be used against the Horde, and that it has been waiting for someone to summon it for centuries.

The Mechatect agrees to help the team, but in return, it demands that they do something for it: destroy the ancient weapon that brought the Horde to Etheria in the first place. The weapon is called the Heart of Etheria, and it is said to possess unimaginable power. However, its activation would cause the destruction of the planet, essentially turning Etheria into a weapon itself.

The team is hesitant to destroy the Heart of Etheria, as doing so would mean sacrificing their planet and potentially countless innocent lives. Nevertheless, the Mechatect insists that it is the only way to stop the Horde once and for all, and it is clear that the team's resolve will be tested in the episodes to come.