North Sea Texas is a heartfelt coming-of-age movie set in Flanders, Belgium. It tells the story of Pim, a gay teenager who is discovering his own identity and struggling with emotions and desires. Pim lives with his neglectful mother in a small coastal town and finds solace in his friendship with the free-spirited neighbor Gino. As their relationship evolves, Pim experiences the highs and lows of first love, the pain of unrequited crushes, and the challenges of coming to terms with his own sexuality.

When the digital-mad Benjamin turns 18, he inherits a box of ancient artefacts from his missing father. He gives an antique book to Slien, a girl he has his eye on, and unintentionally sets off a chain reaction. An old man called Zeppos is also very interested in the book, which once belonged to the cartographer Mercator. Using the secret messages in Mercator's book, the trio uncover a mystery, while having to stay one step ahead of a shadowy rival.