Okay, here is a plot summary for Despicable Me 3 in English:
Plot Summary: Despicable Me 3
Minions Gru and his new partner, Stuck-in-the-Mud (Stu), are celebrating Gru's success in opening the first ever Minion University. Gru has just been elected Mayor of Antwan City. However, Gru's arch-nemesis, Vector the Vulture, reveals he has stolen the "Anti-Gru Ray," a device capable of reversing all of Gru's villainous deeds. Vector plans to use the ray to erase Gru's legacy, making himself the most popular villain in the world.
With Gru's reputation tarnished and his Minions feeling betrayed, Vector captures Gru and forces him to work for him. Gru's Minions, feeling they need a new leader, vote to find Gru a replacement. They choose Vector's clumsy nephew, Balthazar Bratt, a failed 1980s child star, believing his "coolness" will make him a great villain.
Balthazar arrives with his entourage, including his manager Happy, choreographer Kevin, and producer Stuart. While Balthazar tries to project an image of villainy, his team constantly sabotages him with incompetence. Despite this, Gru's Minions begin to follow Balthazar, drawn to his perceived coolness.
Meanwhile, Gru escapes captivity and discovers that the Anti-Gru Ray is located at the Ministry of Evil, which has been restructured under Vector's control. Gru, now considered a criminal by the authorities, is forced to team up with the Minions he once led to infiltrate his own former organization and retrieve the ray.
Gru and the Minions (including some Minions who followed Balthazar but realize Balthazar is a failure) infiltrate the Ministry of Evil, facing various challenges and encountering other villains, including Nefario, now working under Vector. They eventually locate the Anti-Gru Ray and are confronted by Balthazar, who tries to take credit for Gru's plan.
In a climactic battle involving Nefario, Kevin, and Stuart (who betray Balthazar), Gru and the Minions manage to destroy the Anti-Gru Ray by throwing it into the incinerator. Gru is celebrated as a hero by the public, and Vector is defeated. Balthazar's career as a villain collapses spectacularly.
The film ends with Gru, Nefario, and the Minions celebrating Gru's return to popularity. Gru is elected President of the United Minions Nations (UMN). Balthazar is left in a tiny helicopter, having been fired by Vector, and is mistaken by another villain for a delivery boy. Gru finally confesses his love to Lucy, and they share a kiss.
