Ep 3. Underground

In the third episode of the first season of Monsuno, titled "Underground," the protagonist, Chase, discovers a secret underground laboratory while exploring a deserted facility. There, he uncovers information about the Monsuno, a secret organization with which his father was involved, and about Monsuno creatures' origins.

Chase meets Jeredy Suno at the underground laboratory, who reveals some information about the Monsuno research they had done. Jeredy tells Chase that they had created Monsuno creatures intending to help people, but things went wrong. The Monsuno fell into the wrong hands, and now those people use the creatures to hurt others. Jeredy hopes that his efforts will rectify the situation.

Later, Chase's friend Bren and his Monsuno Lock arrives at the facility, and the two boys work together to defeat S.T.O.R.M. agents who are after a powerful new Monsuno. Lock and Charger, another Monsuno creature of Chase's, demonstrate the strength of their combined power during the fight, which surprised everyone.

In the following moments, the boys discover the Monsuno's connection to an evil organization named S.T.O.R.M. Because of this, Chase and his friends attempt to find out more information about the organization and their plans. Jeredy Suno explains to the boys that the Monsuno essence can be harnessed and mixed into salt to give it immense power. S.T.O.R.M. plans to utilize this ability to take over the world, and the boys must stop them.

As the episode progresses, the team becomes more aware of the gravity of the situation they are in, and they realize that the key to defeating their enemies may lie with Chase's father, who went missing years ago. In the end, the boys resolve to find Chase's father and to stop S.T.O.R.M. from using the Monsuno to destroy the world.

The "Underground" episode provides insight into the backstories of the Monsuno characters, revealing the complexities of their motivations, relationships, and internal struggles. The episode portrays the team's determination to save the world from evil forces, highlighting their bravery and selflessness. The episode also sets up many plot points that will develop throughout the rest of the season, indicating that the viewers are in for quite a wild ride.