In a small coastal town, a group of restless teenagers embark on a series of exciting adventures during the summer. Life seems like a sea of laughter and games until a mysterious series of thefts begins to disrupt the peace of the place. One of the girls, passionate about solving mysteries, decides that they cannot allow fear to take over their community. Together with her friends, she forms a secret club they call "The Night Watchers."
With makeshift costumes and their inseparable bicycles, the young people dedicate themselves to patrolling the neighborhood, looking for clues about the thief who is terrorizing the residents. The situation becomes more complicated when they discover that the thief is not who they expected, but is connected to a dark secret surrounding a mysterious outsider who has arrived in town. As they try to unmask the true culprit, the teenagers also face their own internal conflicts, from jealousy to first love.
With a touch of comedy, friendship, and a bit of youthful romance, the group must join forces not only to unravel the mystery but also to learn valuable lessons about trust and bravery. Although the essence of their time has been lost, their adventurous spirit and quest for justice resonate with the modern audience, reminding us how the bonds of friendship can illuminate even the darkest situations.