In Season 1, Stella brought Bloom to Alfea when Bloom discovered her magical abilities. She forms a team, Winx Club with four other girls, Bloom, Flora, Musa and Tecna. Together, they fought evil and brought peace and harmony to Magix. At first the three witches, Icy, Darcy and Stormy attempted to steal Stella's ring, as they believe it has the power of the dragon. They sent a note pretending to be Brandon to ask her out on a date. At last, they succeeded, by kidnapping and binding Stella and thus forcing Bloom to hand over the ring. They immediately tested the ring for its magical powers, however, they were disappointed that the ring was not as powerful as they expected. Bloom was not the leader of the group but at times takes the roll.

Stella later finds out her parents are divorcing. And when the день of the Rose she lashes out at Bloom because she was stressed of what clothes to wear to whose house for the weekend. She was still a little denial about her parents, and very much wanted them to work out.

They started to gain deeper understanding and trust in their friends, and appreciated their Друзья for their different personalities. Stella and Brandon start to get interested in each other. Initially, Stella knew Brandon as Sky , but in the 17th episode, when Sky's true identity revealed, she was horrified to realise he lied to her. She was devastated, like Bloom, but she was optimistic and cheerful, and recovered from her shock. Perhaps Stella truly loves Brandon for who he is, so she accepted him as a squire. Stella aided Bloom in recovering her power when the three witches took it. Eventually, Bloom recovered her powers and Stella and the others joined the battlefield. Stella, Flora, Musa and Tecna held off Darcy and Stormy, whereas Bloom settled a score with Icy. In the end, the Winx Clum emerged victorious.