It was a hot summer day at Four Star Academy, and Yume and Koharu were getting ready for work. It was a big day for their brand Rainbow Berry Parfait because they were going to have a summer fashion show. But their preparations were interrupted when Yume's Aikatsu! Mobile started ringing. The person calling was Euterpe! "Hello?" Yume answered. "Greetings Yume Nijino and Koharu Nanakura" Euterpe greeted. "Greetings Euterpe" Yume and Koharu greeted back. "I have a mission for the both of you" Euterpe said. "Do you think we can do it later? We have a busy day today" said Yume. "We're holding a fashion show for the summer collection of Rainbow Berry Parfait" Koharu explained. "...Very well. But I expect you to call me right after your show" Euterpe replied reluctantly. "We will" Yume and Koharu said.
After the fashion show, the girls immediately called Euterpe back. "How did your fashion show go?" the goddess asked. "It went very well, thank you" said Yume. "Now for your mission" Euterpe began. She explained that there are creatures called Care Bears who are trying to spread joy through the world, but an enemy called Dark Heart wants to put the world in darkness and despair. "Your mission is to help the Care Bears defeat Dark Heart" Euterpe concluded. "But we're idols. What can we do?" asked Yume. "I'm sending you to a summer camp. You will figure everything out there" explained Euterpe before hanging up. She then used her god magic to open a portal. "I have no idea what a summer camp has to do with anything, but I'm ready for a mission. Are you Koharu?" Yume asked her childhood friend. "I'm ready, Yume" Koharu replied. So the two girls went through the portal and on the other side, they were at a summer camp.
"I think this is the camp. But what are we supposed to do?" Koharu asked. Before Yume could answer, the girls heard voices. Kids were racing to the camp. Yume and Koharu hid behind one of the cabins and they watched the race. A brown-haired girl and two blonde twins tripped before they could reach the camp. "First back!" a boy laughed as he won the race. "I won! John, Dawn, and Christy are last again" "So what else is new?" Christy, the brown-haired girl pouted. "Ha, ha, ha!" the boy smirked as he came toward them. "You three are last at everything!" "And you always win at everything. So what does that make you?" Christy pouted to the boy. "Camp Champ, that's what!" the boy smirked. "I can run faster, swim better, and hike longer than the three of you put together, but big deal, so can every other kid here. Let me give you some advice: if you can't keep up, leave!" He then handed them bags and trash pickers. "Oh, after you do trash duty." The boy and the other kids laughed as they left. Yume and Koharu looked angry for how the kids bullied Christy, John and Dawn. Christy angrily got up and sighed as she sat on the steps of a cabin. "I wish that just once, I could be Camp Champ" she sulked sadly. "I hate being last, and I hate being here!" "So do we Christy." Dawn replied. "We can't paddle a boat. He's right. We'll always be last." "And we'll always be on trash duty" John added with a huff. "And all the camp laundry." Dawn nodded to her twin brother. "Well, not me!" Christy glared as she stood up in determination. "Not anymore! I'm gonna do something about it." "What are you-" John started. "Going to do?" Dawn finished. "I'm going to run away!" Christy replied before going to leave camp forever. "Wait, Christy, we're going with you!" John and Dawn called out as they followed the brunette girl. Yume and Koharu decided to follow them. "Don't run away!" The bird totem pole head rushed over before falling next to them.
The teen girls stopped where they were. Yume took the head off and saw what looked like a living bear stuffed animal with a heart starry mark on its tummy. The girls gasped. "Did you see which path those kids took?" The bear asked. "I must find them." "I think they went this way. Who are you anyway?" Yume replied. "My name is True Heart Bear." The bear introduced herself as she wore a pink backpack with a baby bunny sticking its head out. "Aw, and who's this?" Koharu smiled as she saw the baby bunny. "This is little Swift Heart Rabbit" True Heart introduced with a smile back. "We haven't met anyone who didn't know who we were, but we're from the Care Bears family from Care-A-Lot." "Care Bears?" Yume and Koharu asked. "Yes" True Heart nodded. 'This must be one of those Care Bears Euterpe was talking about' Yume thought. Koharu briefly picked up Swift Heart and played with him while giggling which made her smile with Yume. "He's so cute~" Yume cooed to the baby rabbit. "By the way, my name is Yume Nijino" "I'm Koharu Nanakura" Koharu introduced herself. "It's so nice to meet you both. Now we must go after Christy and the twins" True Heart smiled before sighing. "Oh, I do hope things are going better for Noble Heart than they are for me." Yume and Koharu followed the Care Bear into the forest so they could bring back Christy and the twins back to camp.
They soon found the twins sitting alone. "I think it's time you guys got back to camp" said Yume. "Yes, this is the way back. If you wanna take it." True Heart added with a friendly smile. "Who are you?" Dawn asked. "What are you?" John asked, referring to True Heart. "I'm Yume and this is Koharu and True Heart" Yume introduced. "We've come to help you find your way back to camp" said True Heart. "Forget it!" the twins crossed their arms. "We're not going back to camp!" John firmly pouted with his twin sister. "EVER!" Dawn and John snapped. "But running away never solves anything" said Koharu. "She's right. You two are just worried about the things you can't do. Maybe you should think about the things that you can do." True Heart agreed. "Like what?" John huffed. "We can't do anything." Dawn added. "That's not true." Yume said. "For starters, everyone can share their feelings." True Heart suggested. "Hmph!" Dawn pouted as she sat down with her twin brother. "Nobody wants to share anything with us." "We're just losers!" John added. Yume was about to say something before they heard Swift Heart crying. "John and Dawn, meet Baby Swift Heart Rabbit." True Heart introduced. "Don't cry, little one" Dawn smiled as she picked up the baby blue bunny. "There, there..." "It's all right." John added before tickling the bunny. Baby Swift Heart Rabbit soon calmed down and started to laugh. "See? You can do something!" True Heart smiled to them. "You can share your feelings and make friends." "Well..." John started. "Maybe..." Dawn finished.
"I'll show you!" True Heart smiled before summoning a cloud car. "Ooh." The group smiled. "Hey! Where are we going?!" John asked the Care Bear. "To meet my friend, Noble Heart." True Heart smiled as she stayed behind. "Aren't you coming?" Yume asked. "Oh, dear!" True Heart replied as she didn't seem to think of that. "Hurry, True Heart!" Koharu cried out. True Heart created a rainbow and climbed up to go after them, and where she soon made it into the cloud car. John helped her up with a smile. "Thank you" True Heart smiled back. "There has to be easier ways of getting around." "So where exactly are we going?" Koharu asked. "We're going to the Kingdom of Caring" True Heart smiled. She took the wheel and drove them to the kingdom of her home.