Yukee is struggling with a tune on her ukulele, so she tells her friends she's going to give it up. When Twinkle agrees that Yukee should try a new instrument, Yukee realises that sometimes a struggle comes before success.

When Rock Night is double booked, everyone's beloved Sundial Stage quickly becomes a crowded and noisy place to be. It's up to Yukee to help her friends rediscover that things sound better when everyone plays together.