<The Whale in My Pocket> is a story about teens and their dreams to become the next K-pop star.

Min-gi is a handsome young boy, but his parents only approve of his sister, an A+ student.

After receiving offers from multiple celebrity agencies, Min-gi is determined to become the next K-pop star. He attends auditions with his best friend Hyun-jung, although the duo never makes it through the first round. Min-gi finds a chance at success when he becomes friends with two very talented teenagers, Yeon-ho and Jun-hee.

Yeon-ho’s mother is a financially irresponsible cabaret singer. Yeon-ho is left to take care of his blind grandmother, while his mother gets herself in more troubles. Jun-hee faces obstacles as an adoptee, despite the love and care his adoptive parents provide for him. The two fear of being under the spotlight, and naturally refuse when Min-gi asks them to form a team with him for auditions.

Will the struggling teens finally achieve their dreams? Which of them will become the next K-pop star?