The Royal Family are eating except Francisco. Elena's right arm is still broken, and she's having trouble using her fork with her left hand. Elena asks Isabel about the new observatory. Isabel tells her big sister that Professor Ochoa asked her and the other students to help set up for the grand opening tomorrow. When Flo asks Francisco why he's not eating, he tells everyone that he's not hungry, to everyone's shock. Everyone asks him what's wrong. Francisco tells them there's a comet coming that night, but he will miss it because his telescope isn't powerful enough for him to see it, and it won't pass over again for 117 years. Elena and Isabel wish there was something they could do. Suddenly, the clock goes off. Isabel tells Elena that she needs to get to the observatory stating "Just wait till you see the new telescope." When Elena questions about the telescope and Isabel explains that it's the most powerful telescope in the hemisphere as she leaves. Elena sidetalks to Luisa "Should we tell her?" to which Luisa tells her granddaughter "Wait for it." Isabel suddenly comes back and shouts "I know how abuelo can see the comet tonight!" Elena and Isabel tell their grandfather that he can use the new observatory's telescope to see the comet. An overjoyed Francisco heads to the kitchen while his granddaughters head to the new observatory.
The two Princesses arrive at the new observatory where they meet up with Professor Ochoa. They ask Professor Ochoa if they can let their grandfather use the telescope to see the comet and she says yes. However, she does warn them to not get caught out in the storm that's coming. Elena and Isabel head inside and meet up with Tomiko, who's excited to see them again. Tomiko shows them the key she made for Elena to use during the grand opening. Tomiko and Isabel set up the telescope. Unfortunately, the storm hits and destroys the lens to the telescope. Elena insists that they must make a new lens. Tomiko and Isabel agree but insist on making a lightning rod first. Elena decides on using the key, which Isabel and Tomiko agree with. Elena hooks it up on the telescope and a wire to it. Isabel and Tomiko use the broken glass to make a flux and send Elena out to get the ingredients they need to add to the flux.
Unfortunately, while Elena is collecting ingredients, she spills a chemical onto sand that she spilled on the floor. Elena's new magic activates and traps her inside, and to her confusion, her dress is gray this time. By the time Isabel and Tomiko get her out, Elena asks how the flux is coming, making the duo realize that they forgot about it. By the time they get back, they find that they let the flux heat too long, and that means they lost the one ingredient they need to make glass with fire, and now the reaction will require more energy, which they don't have. Isabel sadly says there's nothing they can do to fix the telescope, meaning Francisco won't be able to see the comet. Elena blames herself for this and voices how she's no good at science, and Tomiko tells her not to say that and says that she wasn't born a scientist; she had to study and learn and practice, and she tells Elena that she can be good at anything if she puts her mind to it. Seeing the metal cup that the lightning melted, Elena has a scientific breakthrough: if lightning is hot enough to melt metal, it could provide enough energy to make the new lens, and when Elena suggests they routed the lightning rod into the flux, Isabel and Tomiko agree with her. They execute Elena's plan and make the new lens. They then install it on the telescope. Later, Francisco arrives and uses the telescope to see the comet.
- Aimee Carrero as Princess Elena
- Jenna Ortega as Princess Isabel
- Emiliano Diez as Francisco
- Julia Vera as Luisa
- Kether Donohue as Flo
- Carla Tassara as Professor Ochoa
- Kimiko Glenn as Tomiko
- Elena's right arm is still hurt and bandaged from Giant Steps. It appears to have almost healed though, since she seems to have very little trouble picking up objects with her cast-covered hand.
- Elena has a new magic emotion, self-doubt. When she feels this emotion, her dress turns gray.
- In real life, if elderly show loss of apetite, it usually means an underlying medical condition. This would explain why Luisa was worried that Francisco was sick when he said he wasn't hungry.
- Morals: Don't be afraid to admit you can't do something if you can't do it. When in doubt about something new, don't be afraid to just give it a try.