"A New Beginning" is the first episode of Disney's Adventures of the Gummi Bears.
The episode opens as Duke Igthorn- a traitor to the kingdom of Dunywn -is testing his new catapult on a model castle, which succeeds. Ordering his minions, the ogres, to hurry up on finishing the real thing, he muses over the destruction of Dunwyn (and King Gregor's castle, by extension).
Meanwhile, two boys- a squire named Unwin and a page named Cavin -are riding through the woods on mules on their way to deliver lunch to woodcutters. Unwin complains about the errand, stating his time could be better spent practicing his combat skills, but Cavin tells him that the job they are doing is important. In criticism, Unwin throws a piece of chicken at Cavin's mule, causing it to buck and leave Cavin and the lunches he was carrying behind. Cavin, annoyed at this, grabs Unwin to try and hurt him, but Unwin stole Cavin's Gummi Medallion. Cavin tried to get it back, only to end up causing Unwin to fall off his mule. Tackling Cavin, Unwin forces his fellow aide to admit that he believed in Gummi Bears, saying afterwards there was no hope for him. Cavin then says that there aren't any Gummi Bears around, but they used to exist, even though Unwin said they were just fairy tales; unbeknownst to them both, they were overheard by Cubbi- an actual Gummi Bear. When they got to the woodcutters' camp, Sir Tuxford was waiting for them and said they were late and then Unwin blamed it on Cavin. Cavin then said that Sir Tuxford should be watching out for ogres and then Unwin said there were no ogres in the area, but then an ogre appeared and frightened Unwin, Sir Tuxford, and the woodcutters. However, before running away, Cavin managed to knock one of them out with a piece of meat. After that, one of the ogres cheered and said how good a job they did scaring them off and Duke Igthorn commended them on a job well done. As Cavin was running away, some ogres were chasing him but two them got caught in traps sprung by an unknown someone. However, Cavin fell over and was rendered unconscious.
Meanwhile, at Dunwyn Castle, young Princess Calla jumped into a haystack, only to be caught and reprimanded by her father, King Gregor. Just then, Sir Tuxford comes to warn King Gregor about ogres in the woods and that they may have Cavin, and at that news, Princess Calla was concerned and then King Gregor asks if she and Cavin are friends and Calla says that he's just nice. Back in the woods, the Gummi Glen Gummis have discovered Cavin and they all have different opinions on what they should do with him, but when they discover that he has a Gummi Medallion in his possession, they argue over whether they should let him keep it, but when Cavin comes to they all run away. However, Cavin manages to chase Cubbi to a tree, even after he drinks some Gummiberry Juice. After attempting to converse with Cubbi, he warns him of some ogres running behind him and opens some doors allowing the pursued Gummis to escape to the tree. However, Tummi Gummi accidentally knocks him into their home and Cavin overhears a conversation between the Gummis and when they see him, they run and hide and Grammi attempts to hit him with a roll of paper and then Gruffi tied him up and put him on a chair. Meanwhile, Duke Igthorn was testing the catapult and when it misfired, Duke Igthorn got out of the way, and the projectile instead landed on his lieutenant, Toadie. Back at the Glen, Gruffi was interrogating Cavin about the Medallion. When Gruffi refused to give Cavin a drink when he asked for it, Grammi berated him for his poor manners and then told Cavin that they'd give him a drink and then Tummi gave Cavin some Gummiberry Juice to drink, which allowed Cavin to break free from the rope and then caused the Gummis to hide, and then Cavin said that he meant them no harm and only wished to be friends. When the Gummiberry Juice wore off, a door that he had picked up had fell on him and then Gruffi tried to get more rope, but then Grammi tripped him and told Gruffi to leave him be and said that Cavin had proven that he is trustworthy. Cavin introduced himself to Grammi and then Grammi introduced herself and the rest of the Gummi Glen Gummis to Cavin. After that, Zummi Gummi, the colony's Keeper of Gummi Wisdom, took Cavin to the colony's Great Book of Gummi and made him swear to keep their existence a secret, which he agreed to. After that, Sunni and Cubbi showed Cavin around their home and took him for a ride through the Quick Tunnels. When they stopped near Duke Igthorn's catapult camp, they saw him testing the catapult and then Cavin realized that he was going to destroy the castle. When he returned to the Glen, he asked the Gummis for help, but they couldn't because they weren't really fighters and they were too outnumbered to be of any help. Angry, Cavin discards his Gummi Medallion and leaves in a huff. Zummi picks up the discarded Medallion and puts it around his neck. Though they didn't have any other choice, Cubbi wished they could help him, and when Zummi mentions the Ancient Gummis, the Medallion glows and leads Zummi to the Book and the Medallion unlocks their book, which had been locked shut for centuries, and the book opened to a passage that told them to fight for what's right despite their small number. Then Zummi decided that he should help Cavin after all and told the others that they are welcome to join him. Before leaving, Zummi copied some spells from the Book and then they left to help Cavin. Meanwhile, Cavin infiltrated the catapult camp and stole a saw to saw off the wheels from the catapult, however, some ogres caught him and chained him by his leg. Meanwhile, the Gummis decided to get some Gummiberry Juice to Cavin to help him defeat the ogres and then Gruffi inadvertently volunteered to be the one who gets the Gummiberry Juice to Cavin and then Zummi cast an invisibility spell on Gruffi, allowing him to sneak past the ogres, but then the spell wore off and he was caught by an orange ogre and then Cavin drank the juice and threw the ogre and a grey ogre to where Duke Igthorn was. An angered Duke Igthorn had them clapped in irons and then they brought the catapult for attack, and then used it to launch a tar ball that sealed the drawbridge. However, the Gummis distracted the ogres while Cavin tore the catapult apart. However, Duke Igthorn noticed Cavin and wanted the Juice and then he got it and became superstrong and nearly destroyed Dunwyn Castle, but the juice wore off and then Cavin was stuck on the catapult as it crashed, allowing the drawbridge to be lowered. A worried Princess Calla and Sir Tuxford came out, along with King Gregor. In keeping with his promise, he lied and said that he was a prisoner. After that, Zummi records their colony's noble deed for the day.