It's crunch time for the athletes as they compete under a cloud of doping suspicion, which intensifies doubts around the true intentions of Olympo.

As Cristian returns and Olympo offers its second sponsorship, an anti-doping raid causes panic. Amaia faces accusations of betraying her fellow athletes.

After a surprise return to the center, the world tournament tests take a toll on Amaia. The documentary about Roque becomes juicier than expected.

Roque's sexuality costs him a place at an international rugby tournament. Unable to find Núria, a suspicious Amaia searches for evidence of doping.

Facing a downward spiral, HPC Pyrenees decides to get tough on the athletes. Cristian turns heads in the center as Amaia becomes increasingly lonely.

Zoe's arrival at the sports center ignites rivalry, while Olympo offers major sponsorships. Amaia pushes Núria to her limits — with severe consequences.

Olympo flaunts its chosen athletes to the media and Amaia spots a chance to uncover the truth about Núria. Meanwhile, Zoe faces a tricky dilemma.

Wracked with guilt about Núria, Amaia struggles to control her emotions. Zoe lets loose at a house party in the woods and has an unexpected hook-up.