A confrontation between two Hong Kong immigrants – one a cab driver from Mainland China, the other a lawyer and refugee from Pakistan – spells disaster for their families, especially the lawyer's young son.

Once a high-flying financial advisor, Hay Man loses everything and moves from her Deep Water Bay mansion to her cousin's modest home in "Deep Water Bo". Hoping to restore her fortune, she agrees to coach a scrappy U12 football team led by her cousin Ying and neighbourhood children for a league organised by a clueless rich heir. What begins as reluctant duty soon transforms into true mentorship, as Hay Man helps the kids confront struggles and regains her own sense of purpose. When the underdog team reaches the finals, she must choose between luxury past and newfound identity.

At the end of summer, a group of friends bid farewell to their childhood with a final football match and embark on a daring escapade, each about to embark on a different path in life.