Ep 21. The Ambassador

In season 1 episode 21 of Marvel's Avengers Assemble, titled "The Ambassador," the Avengers are called upon to protect an ambassador from an unknown new threat. The episode opens with Iron Man, Thor, and Captain America engaging in a battle against Ultron and his army of robots. When they are about to be defeated, they are suddenly teleported away and find themselves in front of the United Nations.

The Avengers are greeted by a diplomat named Lucia von Bardas, who informs them that an unknown enemy is threatening to attack the United Nations and that they have been chosen to protect the delegates. As the Avengers begin their preparations, they are introduced to the delegates, including a young girl named Rapunzel, who has a crush on Thor.

As the delegates are preparing to go into their meeting, the Avengers notice that Black Widow is acting strangely. They discover that she has been possessed by the enemy they are supposed to be protecting the delegates from. The Avengers come up with a plan to remove the possession from Black Widow, but it doesn't go as planned and instead causes her to lose her memory.

The Avengers continue with their mission to protect the delegates, but they soon find themselves under attack by mysterious forces that seem to be able to phase through walls. During the chaos, they discover that the delegates are not what they seem and that they are not there to attend a peace conference. Instead, the delegates are there to collect weapons of mass destruction and use them to attack the world.

With the help of Black Widow's combat skills and her knowledge of weapons, the Avengers manage to stop the delegates and prevent them from causing any harm. The episode ends with the Avengers being thanked by the United Nations for their heroic efforts and for protecting the world from yet another threat.

Overall, "The Ambassador" episode of Marvel's Avengers Assemble is an action-packed adventure that showcases the Avengers' abilities to protect the world from danger, no matter the circumstances. Fans of the Marvel franchise are sure to be entertained by the fast-paced action and suspenseful storyline.