For Kei, Kyoko, and Nozomi, their dream of playing the final high school concert together is dashed when their lead vocalist quits the band. Desperate, they recruit the very first person they see: Korean exchange student Son, played by Doona Bae (THE HOST, BROKER), whose comprehension of Japanese is limited at best. It’s a race against time as the group struggles to learn three songs in three days for the festival’s rock concert.