50 or Two Whales Meet at the Beach

Original title: 50 (o Dos ballenas se encuentran en la playa)

Félix, a 17-year-old boy, receives an invitation on WhatsApp: do you want to play the Blue Whale Game? The one with the 50 challenges? The one where you have to kill yourself at the end? Félix accepts. That is how he meets Elisa. They start completing the challenges together.