The curse of Lalin.

In a small town in northern Spain (Galicia, to be precise), a group of teenagers begins investigating and searching for evidence of paranormal phenomena. Though the "evidence" they seek may find them first. David is what in the supernatural world is called a "true believer," a label the teenager wears with pride as he searches for the existence of all things terrifying and mysterious. When David, along with his skeptical best friend Félix, receives evidence that something terrifying may have appeared at his doorstep, the search for the Curse of Lalin begins, and life will never be the same again.

During David and Felix's childhood, Felix and other boys bullied David to fit in, causing David to fall into a deep depression that nearly led him to suicide. However, Felix saved him from jumping off a bridge into a frozen lake. Felix apologized, and David accepted. After that, Felix protected David from the other children, and they became inseparable friends.

Noemí: She has tanned skin and brown hair, usually styled in two pigtails with pink clips. She has purple eyes and is a little shorter than average. She is often associated with bright pink. She usually wears pink and black. Her outfit consists of a black hoodie, black shorts and black thigh-high socks, a navy and pink jacket, pink earrings, and black and pink shoes. She is a straightforward and self-assured person who usually says what she thinks without hesitation. She is sensible and thinks rationally before making decisions, so she usually keeps her friends out of trouble. She enjoys playing video games with María and David.

Tobias: He has curly reddish-brown hair, pale skin, and wears black-framed glasses. He has copper-colored eyes and is of average height. He is often associated with the color green, mainly because he usually wears green. He typically wears dress shirts and dark jeans, with brown boots and a green hooded coat trimmed with fur. He seems serious at first glance, but he is very cheerful with his friends. He isn't interested in making new friends and prefers to stay with the few he has. He is calm, responsible, and much more mature than he appears, although he is easily swept up in his friends' antics and seems to enjoy them. He has a strong sense of morality, hates bullies, and is able to confront problems directly and logically. He enjoys listening to David's theories, even though he doesn't believe in them. He is very affectionate and understanding, and he carefully observes his friends' behavior.

David: He's a little shorter than average, with pale skin and short, ash-blond hair. He has a distinctive dark brown fringe that hangs between his eyes and covers the scar on his forehead. His eyes are round and amber (True Amber). When he experiences intense emotion, his eyes glow with a yellow hue. He's often associated with yellow or gold because his eyes glow that color. He almost always wears a red scarf along with suspenders that he leaves loose over his shoulders. He's often seen wearing red sneakers and a brown duffle coat, usually with an alien-themed T-shirt underneath.

Felix is ​​a boy of average height with tanned skin and long, spiky black hair tied in a small braid. He has brown eyes and two small moles near his mouth. He usually wears a feather earring in his left ear. He is often associated with indigo and purple, mainly because of the color of his clothes. He wears ripped jeans with a dark jacket and black sneakers, a blue shirt with a pentagram, and a black necklace with three feathers. Felix's eyes glow purple when he is under stress or when his heart is racing.

Maria is a short, thin girl. She has long, wavy orange hair, thick, small eyebrows, and large brown eyes. Maria also has freckles all over her body, and at least one of her ears is pierced. She also has a gap in her tooth. She is often associated with the color orange because of her hair color. She wears a green varsity jacket with thick white sleeves, a pink and white t-shirt, dark denim shorts, and red sneakers. She is an enthusiastic, cheerful, and energetic girl who seems to enjoy theorizing and discussing serious topics like the Lalín killer or the rotten hand, claiming she wanted to see it. She is usually seen with a smile and has a childlike but cheerful attitude in any situation, exaggerating things like a fight between reptilians so much that even David had to remind her they were talking about someone who died. However, Maria doesn't do it maliciously. She describes herself as clumsy, as seen when she jokingly tells Cody that he is clumsier than she is.

Cody is a resident of Lalin who, although he gives the impression of being a normal boy, actually hides a serious secret: he is a reptile who was taken in by a human couple and has kept his second identity a secret until it was revealed by a series of events. He is a boy of average height, with a thin and small appearance. He has short mint-colored hair (dyed brown) and wears it in a bob. He has hazel eyes and a scar on his neck. His reptile form has intense red eyes, slit pupils, fangs, curved red horns, and a long tail and teal scales. When he disguises himself as a demon, he wears a brown cape over a black undershirt and black shin-length tights. He also wears a black mask with a grotesque face. He is often associated with the color teal, as his scales, hair, and tail are that color. He wears a long black turtleneck sweater under an orange and yellow jacket or a turquoise striped hoodie. He wears jeans and dark shoes. He's a boy of few words: he doesn't talk much, not out of shyness, but simply because he's reserved and polite. Although he may seem inattentive, he has a critical eye and always observes his surroundings closely. He's strong, but also very sensitive, and everything affects him much more intensely than normal. When this happens, he tends to overthink things, but he usually smiles. He seems to be very afraid of ghosts and other supernatural beings.

Eric is a very tall boy with spiky blond hair and round blue eyes. He has a lock of hair that falls over his forehead. He also has two small moles under his left eye. He is often associated with bright blue or cyan because of his eyes and the color of his shirt. He usually wears patterned T-shirts under a gray hooded jacket. He wears white high-top sneakers with orange stripes on the sides. He is a very talkative boy. He is always cheerful and accepts challenges enthusiastically. He seems older and more mature because of his physical appearance, but in reality, he is the most childish of his group of friends, getting angry easily when he doesn't get what he wants. He is intelligent, but also very lazy. He never does his homework and spends class on his phone, usually chatting with Felix. He also has a YouTube channel called The_Erix98 where he posts various challenge videos. He claims that supernatural things make everything more interesting and fun, and he doesn't rule out the possibility of strange things happening around him.