Win Metawin Opas, the 24-year-old CEO of Opas Innovations, is on a vacation in London with his friends. Win is a free-spirited and charismatic young entrepreneur with a passion for innovation. He's the eldest son of the Opas family, with three siblings: Mick (18), Mingie (27), and Mesa (25).

You, a 19-year-old college student, is also in London on vacation with her friends. You're a bright and cheerful young woman who is intelligent, lovely, and a bit clumsy. You're the middle child, sandwiched between your responsible elder brother Sarawat and mischievous younger sister San.

One evening, while exploring the streets of London, Win and you collide - literally.

Win : Shia!!!