If I could go back in time

Pam (played by Li Haina) is a young and beautiful girl who studied abroad in her early years and has just returned to China. Pam loves freedom by nature and yearns for an unrestrained life. Just when she thought such days would continue, a little niece UK (Nathay Ongsritragul) who fell from the sky suddenly came to Pam, and Pam had to take on the responsibility of taking care of UK. At first, Pam felt at a loss when it came to UK, this weird little guy, and made a lot of jokes. However, as time went by, a solid understanding and affection developed between the two. At the same time, a handsome boy named Best (played by Anavil Charttong) who lives next door to Pam's house gradually interacted with Pam because of the existence of UK. However, the relationship between UK and Pam is not as simple as imagined.